Unnatural Winter

Through cloud haze
A snow field
Green and mud-red become
A grey-white sheep-fleece palette of crop and earth
Rectilinear pieces puzzle-fit between ice-flow river-paths.

Below a town.

Bare, ringed toes tread wind-ground rock-ice dust
Lime green and dull gold sari
Sways sharp colour
In monochrome streets.

A charcoal cow etched immobile in the road
Tent-hung fatless flesh no insulation
Hoar-frost fingers clutch
Once blood-traced retina
Behind chill impassive eyes.

(written on a flight from Bangelore to Delhi, 29th Sept 2013)

India and APCHI

I am sitting in the Crowne Plaza hotel in Bangelore looking down over the city spreading seemingly endlessly as far as I can see.  Here, out in the suburbs and in the heart of Electronics City, the Hi-Tech enclave, the view is a mix of green trees, concrete offices and small apartment blocks in a pastel palette of lime greens, mauve tinted blues and burnt umber.  There is an absence of yellow and red apart from the girder work of a partly constructed building and airline-warning red and white mobile antennae tower; maybe these are inauspicious colours.  A major highway and the raised highway cut across the view and the airport is presumably far out of site in the afternoon heat haze, it was a near two hour ride away on Wednesday when I arrived in the midst of rush hour, but hoping it is a shorter journey tomorrow morning when I need to catch 6am flight.

I’ve had a wonderful time here seeing many old faces from previous visits to India a few years ago, and also meeting new people.  It was especially great to see Fariza as I hadn’t realised she was going to be here from Malaysia.  It was also wonderful seeing Dhaval and spending time with his family after the end of the conference yesterday, and today reading some of his recent work at ABB on bug reproduction in software maintenance.

Seeing Dhaval’s work and talking to him about it reminded me of the debugging lectures I did some years ago as part of a first year software engineering module.  For many years I have been meaning to extend these to make a small book on debugging.  It is one of those areas, like creativity, where people often feel you either have it or not, or at bets can pick up the skills one time.  However, I feel there is a lot you can explicitly teach about each.

Yesterday was my closing keynote at APCHI 2013.  I’ve put the slides and abstract online and I am working on full notes of the talk.  It felt odd at times talking about some the the issues of rural connectivity and poverty raise by my walk around Wales given the far greater extremes here in India.  However, if anything, this makes the messages for both public policy and design more important.

As I talked both in the keynote and one-to-one with people during the conference, I was constantly returning to some of the ways that in the UK we seem to be throwing away many of the positive advances of the 20th century: the resurgence of rickets and scurvy amongst poor children, the planned privatisation of the Royal Mail, one of the key enablers of the 19th century commercial revolution, and most sad of all the depraved demonisation of the poor that is rife in politics and the media.

There were many interesting papers and posters.  Two demos particularly caught my eye as they represented different aspects of the link between physical and digital worlds, issues that Steve, Devina, Jo and I have been exploring in TouchIT and the Physicality workshop series.  One was a system that augments paper textbooks with electronic resources using a combination of computer vision (to recognise pages in the book) and semantic extraction (for example getting historical timelines from Wikipedia). The other was  a physical ‘drop box’, where you put papers into a slot and then they were copied as images into your DropBox account.  It made me think of the major scan and bin exercise I did a few years ago drastically reducing my piles of old papers.

However, the high spot of the conference for me was Ravi Poovaiah‘s keynote “Designing for the next billion” on Thursday about design for the ‘middle of the pyramid’, those who are out of abject poverty and therefore have access to basic IT and so the design community can do most about.  This does not reduce the needs of those at the ‘bottom of the pyramid’, for whom basic education and healthcare are the most immediate needs.

In the UK not only are the extremes less, few except the homeless would qualify as ‘bottom of the pyramid’, but also they tend to be more segregated. Here a modern glass fronted international retail chain can sit next to a semi-derilict (to western eyes) motorbike repair shop, with used tyres piled on the pavement.  This said, to my mind, with my aesthetic of decay that is maybe the privilege of those who do not have to live it, the latter is far more engaging.  One of India’s challenges is whether it can move through its economic explosion without the attendant dissolution of local identity, culture and family that is the legacy of the industrial revolution in the UK.

 

HCI 2013

Yesterday I got back from HCI 2013, the British Human–Computer Interaction conference in Brunel: lovely people, stimulating papers, and ceilidh dancing to boot.

My first ever paper in computing1Abstract models of interactive systems” was in the first British HCI conference, although I didn’t go to the conference and it was presented by my co-author, Colin Runciman.  Since then I have published and presented many of my favourite papers at HCI, including much of my early work on time in the user interface2.  So the conference has many memories for me.

For various reasons I’d not attended much over a number of years. I don’t really know why, some years I’ve been external examining, some years not had money in the right pot at the right time, sometimes simply travelled too much in the year already. Happily for the last three years I have managed it, and, whenever I go, I come away feeling positive, encouraged, wanting to spend longer lingering.

I can’t help comparing this with CHI, which, in HCI, is the place to be.  It similarly has many lovely people, albeit lost in a crowd of 2-3000, including many I would be unlikely to see any other time, and there is some wonderful stuff at CHI, I recall this year a demo by Japanese students wiring up forks to give tiny electrical stimuli as you eat that mimics the effects of saltiness and so helps you reduce salt intake in food, but, despite all this, I still always end up, at some stage of CHI, sitting in my room, feeling depressed, and thinking “I want to be home”.

I have a short attention span and the child’s love of novelty, and so the breadth of British HCI contributions is always so enjoyable … I actually go into paper sessions, and I am stimulated by them.  CHI’s relative narrowness (in the past) of the concept of HCI as a field was one of the reasons I never published there in my early years; at that stage I was working mostly in formal methods in HCI and this simply fell outside the CHI imagination.  To be fair this has changed dramatically, and now CHI has a very broad remit, I think of some of Bill Gaver’s papers over the years on the artistic/design side of HCI, hardly conventional; however, I still cannot imagine David England’s paper on Category Theory at this year’s HCI being accepted even in Alt-CHI.

It is always a little insidious to name high spots, but David’s paper was certainly one, although I am probably a little biased here as I am one of the few people to have actually used Category Theory in HCI3.  I should also mention Janet Read’s description of stroppy teenagers and Juha Leino who made a study of the pedagogical use of five star vs binary recommendation systems fascinating.

I was at HCI primarily with a Talis hat on and so both the HCI education session at the conference (including Leino’s paper) and the HCI educator’s workshop, were particularly important. At HCI educators I was particularly struck by Helen Sharp’s contribution telling us about the cultural differences between both students and educators on the same OU course taught in Botswana and UK.  Also I lead a short discussion on MOOCs partly reporting on my own experiences in delivering HCIcourse.com and partly using that as a means to stimulate discussion of the role of MOOCs vis-a-vis (so to speak) conventional face-to-face teaching.

If you are interested in teaching using materials from HCIcourse.com, or would like to share our own learning materials, do get in touch.  If you want to study the course yourself it is still available at HCIcourse.com and will soon relaunch at interaction-design.org.

Next year’s HCI conference will be in Southport, hosted by the ChiCi group at UCLAN. Submit a paper, run a workshop, or simply come and join HCI at the seaside!

  1. I had previously published in agricultural engineering research when I worked at the National Institute of Agricultural Engineering.[back]
  2. Time papers at HCI: HCI’87 — “The myth of the infinitely fast machine“; HCI’92 — “Pace and interaction“; HCI’94 — “Que sera sera – The problem of the future perfect in open and cooperative systems“.[back]
  3. I worked with Roberta Mancini and Stefano Levialdi in Rome in the late 1990s on undo systems, and Roberta used Category Theory in her thesis to prove uniqueness properties of certain classes of undo systems.  If I recall right, the Category theory itself was only in the thesis, but the machinery leading into it was described in “The cube – extending systems for undo“.[back]

the economics of misery

It is agreed, by academics and politicians, if the poor are always to be with us, it had better be grinding poverty.

Last week I spotted an interestingly titled “A strong faith ‘can weaken the economy‘” in The Times (22/8/2013, p. 25).  This was reporting on a recent academic article1 in “Social Psychological and Personality Science” (it is ‘science’ so must be true.).  The first sentence of The Times report reads:

“Too much religion can harm a society’s economy by undermining the drive for financial success, according to study.”

(N.B. see coda below for what the academic article actually says.)

I at first thought this must be some sort of study looking at different countries’ rates of growth vs religiosity or something like that, maybe a counter to the ‘protestant work ethic’.  However, it was instead a study of happiness. basically religious people are happier in general, but most critically poor religious people were, in some cases, most happy of all.

Critically for the non-relgious, richer people are a lot happier than poorer people. Yep, surprise, surprise; despite all those worries about which new SUV to buy, or watching the uncertain future of their stock portfolio, rich people’s woes do not compare with wondering where you are going to find the next meal for your children.

From this The Times report’s conclusion follows, that religion is clearly bad for the economy, because poor people have less incentive to become richer.  I guess this is neo-lberal equivalent of Marx’s “religion is the opium of the masses”.  Well, something that Thatcher and Trotsky could have agreed on.

Strangely, given the rich are happy, surely it would be better if they were less happy and therefore more incentivised to be even richer and thus work harder to grow the economy.  Maybe a better headline would be “Happy rich people ‘can weaken the economy'”?  I wonder why the The Times didn’t report that.

On a similar theme, in yesterday’s Times, on the front page, another episode in the long running feckless poor saga, with a headline “Benefits fuel workshy culture, says pensions czar” (27/8/2013, p.1), reporting on a statement from Lord Hutton, who was once part of the Blair government and now a cross-party peer and the coalition’s pension advisor.

Yes, it is official, poverty is not enough, the only route to economic regeneration and growth is grinding poverty and misery to boot.

Coda — what the academic article actually says

I found a copy of the full article on Southampton’s eprints server.  The actual words in the conclusion, from which The Times makes its summary are:

“Consequently, as long as religiosity fosters anti-wealth norms, it may undermine financial strivings and success both at the individual- and culture-level. This may be a mixed blessing: religiosity may curb ever-needed economic growth but may also thwart individuals and cultures from making risky financial decisions.”

Ignoring the implicit assumption that growth is ‘ever-needed’, it is interesting that The Times headline did not read “A strong faith could have prevented financial crisis“.

Furthermore, the phrase in quotes in the headline ‘can weaken the economy‘ does not actually occur anywhere in the pre-print of the paper.

Two other things were interesting to note.

First, despite the paper’s title and abstract that mentions “religiously diverse cultures“, in fact the study is of 11 European countries (not including the UK)), only one of which (Turkey) is not predominantly Christian.  Interestingly Turkey is one of the countries (with Germany, Switzerland and the Netherlands) that showed the opposite trend to the norm.  Given this, maybe The Times headline should have been “Muslim faith can ‘strengthen the economy’“.

Second, it was interesting to note the superficial knowledge of actual religious teaching evidenced in the article.  Following the general European-Christian theme, all the quotes in the paper are Judeo-Christian, and quite rightly the paper numerous cites texts that comfort the poor and warn of the danger of riches (e.g. “It is easier for a camel to go through the eye of a needle than for someone who is rich to enter the kingdom of God”, Mark 10:25).

While this Biblical ‘Bias to the Poor’ (as the late David Shepherd put it), is accurate, the article also cites Moses’ destruction of the Golden Calf in Exodus, which the paper deems to be a parable about gold.  Of course, the point of the story is not about the fact that it is gold but that they are worshiping an idol not the true God, this would have been a problem were it made of gold, clay or Brighton Rock.  Indeed later, the Ark of the Covenant, where the tablets of the law brought down by Moses are stored, incorporates gold and other precious materials (Exodus 25).

Interestingly, given The Times doctored a quote from the article, the article doctors a quote from God, inserting the word ‘golden’ into his command to Moses to go down from the mountain (Exodus 32:7-10).  To be fair, being good academics, the word ‘golden’ is in square brackets, academic speak for “I know it doesn’t really says this, but I’m inventing words to make my point anyway, and hoping you read it without noticing”.

You see, we academics are honest about our deceit. … now I’m sure there is something in the Ten Commandments about that …

  1. J. E. Gebauer, A. D. Nehrlich, C. Sedikides and W. Neberich. The Psychological Benefits of Income are Contingent on Individual-Level and Culture-Level Religiosity. Social Psychological and Personality Science. September 2013, vol. 4 no. 5, pp.569-578.(published online before print December 20, 2012), doi:10.1177/1948550612469819.  abstract at SagePub, full text at Southampton eprints.[back]

the myth of the ‘supermom’ supervisor

On Facebook I’ve seen a number of shares to an article in the Times Higher entitled “10 truths a PhD supervisor will never tell you“.  The author is writing from an Australian perspective, and is now a senior academic in a university there, so has seen, at least the system there, from both sides.  The article includes useful advice.  Some seems obvious, such as “A supervisor who is active in the area of your doctorate can help to turbocharge your work“; of course this may not be so obvious to a young PhD student … but then how many read THES?

However, I was sometimes lost as to whether the author was carping at her own PhD supervision many years ago, or writing satirically as the set of requirements for a PhD supervisor sounded a bit like the mythical supermom juggling nappies, school run in the SUV and voluntary work in the Opera House all in the gaps in her busy schedule as chief executive of a multi-national.

To be honest, as a PhD supervisor, I have sometimes felt like a flailing (and often failing) supermom, but the supermom is an invention of exploitative magazines, ignorant media and the odd misogynist, and the super-supervisor is no more soundly based.

Some of the comments on the THES website do pick up these contradictions, for example (truth 3) never being absent on the weekly meeting slot (the school run), but also (truth 4) powerful enough to protect the student from bureaucracy (the chief executive).

Most of the Facebook shares have been positive and the article reads well if read as hyperbole, however I can’t help feeling that it should be mixed with a little more realism … and maybe someday I should write “10 truths they never tell you about being a PhD supervisor”.

In the UK our PhD system (and indeed whole university system) dates from the time when less than 1 in 20 school-leavers went to University and of those less than 1 in 20 went on to do any sort of post-graduate degree or PhD. While the latter figure has not grown so much, the former is now near 40%.  I guess, in the dim past, with a super-elite of less than 0.25% doing a PhD, a ‘sink or swim’ approach may not have worked so badly; a bit like saying “Hey Usain, run”.

The mix of students has changed, but the attitudes and models have not kept pace, for example, many universities still count PhD supervision as ‘research’ time rather than teaching, a perk rather than a job. In the UK system we still, in practice if not in word, regard the PhD process as independent research rather than as training for independent research.  This puts unrealistic pressure on the student and makes the supervisory task one of all responsibility and little control (pretty much the clinical definition of stress).

To be honest some academics do take the old school approach, seeking research ‘cannon fodder’ rather than students, but for the prospective PhD student this is rarely an issue as they won’t accept you anyway unless you are already an academic Usain Bolt.  However, the vast majority of supervisors put in substantial time and personal energy in what is often, institutionally, a thankless task.

The fees for PhDs also reflect the old model, whether they are paid by the UK government, some sort of external sponsor or in rare occasions the student themselves.  I once calculated that the average PhD fees (higher for overseas student than EU ones) paid for a maximum of 2 hours per month for normal supervisory activities, this to include every email answered, university form filled in and paper/chapter read as well as face-to-face contact.  This is in contrast to a stated minimum contact time of 2 hours per month and in practice at least twice that, not to mention the above average periods.

Maybe we could have supermom supervision, but it would cost an awful lot more.

I have had some wonderful PhD students, but by definition you know them at one of their most vulnerable, but also most self-absorbed times of their lives.  When they are not actually having babies while doing the PhD (I’ve lost count of my PhD ‘grandchildren’), the thesis is like a baby, and every student is going through the emotional and physical trauma that entails!  The job of PhD supervisor is more often about motivating, cajoling, and wiping tears than sharing pearls of academic wisdom.  But, happily, the only homicidal student I have supervised (not PhD!) only threatened other academics and not me.

In my own experience, I bought my first mobile phone so that I could walk back and forth on the beach on a rare family holiday helping a student through an early paper submission, and I have received a complete thesis draft on Christmas Eve knowing I needed to read it by Boxing Day … indeed I cannot recall when I last had a Christmas period without either a PhD thesis to read for a student or one to examine externally.

I was fortunate in that my busiest time as a PhD suorvisor was when my daughters were already starting to grow up (although maybe they did not think so at the time), as they were born just before and while doing my own PhD (yes Colin you too were a PhD grandfather).  A colleague, who had had his first child while he was already a long-standing academic, once told me how he had cut back his working hours. “I don’t come in until 8:30 and I leave by 4:30”, he said – oh my goodness an eight hour day. But then he spoilt it, “and I don’t start work again until after the baby is asleep at 7, and do less at weekends”.

So, if you are a prospective or current PhD student, do read the THES article.  However do also remember that to the extent that your supervisor satisfies any of the ‘supermom’ criteria, it is not that they are ‘doing their job’, but because, out of their own time and effort, they are doing it for you. And, please, don’t forget that they have a life as well.

And if you are a PhD supervisor and read the THES article with despair in your heart, believing you have failed your students, your university and yourself, remember, the ‘supermom’ supervisor is a myth.  At times being a supervisor may be demoralising, depressing and debilitating, but also there are rewards (albeit unlikely to be institutional ones) when you see your students mature.  And, please, don’t forget who your real children are.

CHI Academy … a Faustian bargain?

I am on a short excursion from walking Wales to CHI 2013 in Paris.

Last night I was inducted into the SIGCHI Academy. No great fanfares or anything, just a select dinner and a short ceremony. I thought Gerrit, who is current SIGCHI chair would look good with a sword dubbing each person, but instead just a plaque, a handshake and a photo or two by Ben Shniederman, amanuensis of CHI.

I feel in two minds. On the one hand there are many lovely people in CHI community, and I spent a great afternoon and evening chatting to folk including Phillipe Palanque, Mary Czerwinsky and Hiroshi Ishii over dinner. However, ACM and to some extent SIGCHI often appear like the Star Wars imperial forces, intent on global domination.

The CEO of ACM did little to dispel this at the opening ceremony this morning.  He spoke of ACM’s international aspirations and praised CHI for regularly having its conferences outside of the US.

Now ACM is the de facto international computing organisation and CHI is the de facto international conference in human–computer interaction, but by virtue of the fact that they are the US ones.  In principle, IFIP and Interact are the international computing organisation and HCI conference respectively, as IFIP is the UNESCO founded body of which ACM and other national computing bodies, such as the BCS in the UK, are members.  Interact, the HCI conference sponsored by IFIP is truly international being held in numerous countries over the years (but I think never yet the US!); in contrast having approximately two out of three conferences in the US is laudable, but hardly the sign of a truly international organisation.

So, is the ACM an originally US organisation that is in the process of slowly becoming truly international, or is it part of more general US cultural domination?  Although probably neither are completely accurate, at present there seems to be significant aspects of the latter under the guise of the former.  In a way this is, in microcosm, an image of the same difficult relationship between USA and UN in other areas of international affairs.

And by joining the SIGCI Academy am I increasing the European presence in CHI and thus part of the process to make it truly international, or selling my academic soul in a Faustian bargain?

wonder women

As I started to prepare for the Wales walk I learnt about Anne-Marie “Arry” Beresford-Webb, who in her DragonRun1027 was first to traverse the new Wales Coast Path and existing Offa’s Dyke long distance path all around Wales.  Only Arry was not content to walk around Wales, as I will do in a few weeks, but she ran it, 39 days, a marathon distance every day, all in support of Velindre Cancer Centre.  I thought Arry was Wonder Woman – just absolutely amazed, in a year of amazing Olympic successes, still my hero of the year if not the decade.

I thought this must be the summit of achievement, what could equal that.

Then Rob Styles (@mmmmmrob) shared a link on Twitter to One MIllion Lovely Letters.

Since she was eleven, Jodi Ann Bickley (@jodiannbickley) has been leaving notes “between text books, on buses, in libraries and as I got older in pubs, restaurants … anywhere I thought that maybe someone might need a little bit of cheering up, reassurance or just a reminder that actually they are pretty lovely” because “everyone deserves to know that they are thought of and they are loved. Even if it is by a complete stranger.“.  And now she is offering to write to anyone, beautiful hand written letters, full of love, to anyone, any of the seven billion strangers we all have in this world.

This would all be marvellous enough on its own, yet when she describes her lifelong project of lovely note leaving she goes on to say “… and as I got a little older in doctors surgeries and hospital beds“.  It turns out that the new turn to letter writing is because she has been recently “blessed with a lot of time“, and this blessing, not a lottery win leaving her a lady of leisure, or retirement at the end of her years, but a debilitating illness at the age of 24.

I am sure Arry’s ultra-marathon running is based on years of physical practice starting with small runs and building up to her epic achievement, gradually exercising muscles and joints so that when called upon to work in extremes they are ready.  Not that the work was not hard and painful, not that feet did not bleed and muscles ache, but a body prepared through small things for the great things demanded of it.

It sounds to me that in spirit and personalty,  Jodi has had just such exercise, creating a habit of joy-giving in small things so that when the big challenge came, while no less painful in the body and soul, she is ready, not just to endure, but to make it a blessing for others.

I am amazed and awed.

I myself have been blessed to know many wonderful women, not least my wife and lovely daughters.  And I can only thank God that in days of cynicism and depression, hardship and crisis, there are those who in different ways rise as heroes to inspire us all.

more on disappearing scrollbars

I recently wrote about problems with a slightly too smart scroll bar, and Google periodically change something in Gmail which means you have to horizontally scroll the page to get hook of the vertical scroll bar.

I just came across another beautiful (read terrible) example today.

I was looking at the “Learning Curve“, a bogspot blog, so presumably using a blogspot theme option.  On the right hand side was funky pull-out navigation (below left), but unfortunately, look what it does to the scroll bar (below right)!

   

This is an example of the ‘inaccessible scrollbar’ that I mention in “CSS considered harmful“, and I explain there the reason it arises.

The amazing thing is that this fails equally across all (MacOS) browsers: Safari, Firefox, Chrome, yet must be a standard blogspot feature.

One last vignette: as I looked at the above screen shots I realised that in fact there is a 1 pixel part of the scroll handle still visible to the left of the pull-out navigation.  I went back to the web page and tried to select it … unfortunately, I guess to make a larger and easier to select the ‘hot area’, as you move your mouse towards the scroll bar, the pull-out pops out … so that the one pixel of scrollbar tantalises, but is unselectable 🙁

Action Research in HCI

Recently Daniel Tetteroo asked if I knew about publications in HCI, prompted partly by the fact that I have described my Wales walk next year as a form of action research.

I realised that all my associations with the term were in information science rather than HCI, and other non-computer disciplines such as education and medicine. I also realised that the “don’t design for yourself” guidance, which was originally about taking a user-centred rather than technologist-centred approach, makes action research ideologically inimical to many.

I posted a question to Twitter, Facebook and the exec mailing list of Interaction yesterday and got a wonderful set of responses.

Here are some of the pointers in the replies (and no, I have not read them all overnight!):

Many thanks to the following for responses, suggestions and comments: Michael Massimi, Nathan Matias, Charlie DeTar, Gilbert Cockton, Russell Beale, David England, Dianne Murray, Jon Rogers, Ramesh Ramloll, Maria Wolters, Alan Chamberlain, Beki Grinter, Susan Dray, Daniel Cunliffe, and any others if I have missed you!

details matter: infinite scrolling and feature interaction

Many sites now dynamically add content to a page as you scroll down; this includes both Facebook and Twitter feeds, which add content as you get near the bottom.  In many ways this is a good thing, if users have to click to get to another page, they often never bother1.  However there can be unfortunate side effects … sometimes making sites un-navigable on certain devices.  There are particular problems on MacOS, due to the removal of scrollbar arrows, a usability disaster anyway, but confounded by feature interactions with other effects.

A recent example was when I visited the SimoleonSense blog in order to find an article corresponding to an image about human sensory illusions.  The image had been shared in Facebook, and I found, when I tried to search for it, also widely pinned in Pinterst, but the Facebook shares only linked back to the image url and Pinterst to the overall site (why some artists hate Pintrest).  However, I wanted to find the actual post on the site that mentioned the image.

Happily, the image url, http://www.simoleonsense.com/wp-content/uploads/2009/02/hacking-your-brain1.jpg, made it clear that it was a WordPress blog and the image had been uploaded in February 2009, so I edited the url to http://www.simoleonsense.com/2009/02/ and started to browse.  The site is a basically a weekly digest and so the page returned was already long.  I must have missed it on my first scan down, so I hit the bottom of the page, it dynamically added more content, and I continued to scroll.  Before long the scrollbar handle looked very small, and the page very big and every time I tried to scroll up and down the page appeared to go crazy, randomly scrolling anywhere, but not where I wanted.

It took me a while to realise that the problem was that the scrollbar had been ‘enhanced’ by the website (using the WordPress infinite scroll plugin), which not only added infinite scrolling, but also ‘smart scrolling’, where a click on the scrollbar makes an animated jump to that location on the scrollbar.  Now many early scrollbars worked in this way, and the ‘smart scroll’ options is inspired by the fact that Apple rediscovered this in iOS for touch screen interaction.  The method gives rapid interaction, especially if the scrollbar is augmented by ‘tips’ on the scrollbar (see the jQuery smartscroll demo page).

Unfortunately, this is different from the Mac normal behaviour when you click above or below the handle on a scrollbar, which effectively does screen up/down.  So, I was trying to navigate up/down the web page a screen at a time to find the relevant post, and not caring where I clicked above the scroll handle, hence the apparently random movements.

This was compounded by two things.  The first is a slight bug in the scrolling extension which means that sometimes it doesn’t notice your mouse release and starts scrolling the page as you move your mouse around.  This is a bug I’ve seen in scrolling systems for many years, not taking into account all the combinations of mouse down/up, enter/leave region etc., and is present even in Google maps.

The second compounding factor is that since MacOS got rid of the scrollbar arrows (why? Why? WHY?!!), this is now the only way to reliably do small up/down movements if you don’t have a scroll wheel mouse or similar.

Now, in fact, my Air has a trackpad and I think Apple assumes you will use this for scrolling, but I have single-finger ‘Tap to click’ turned off to prevent accidental selections, and (I assume due to a persistent bug) this turns off the two finger scrolling gesture as well (even though it is shown as on in the preferences), so no scrolling from the touchpad.

Since near the beginning of my career I have been fascinated by these fine design decisions and have written previously about scrollbars, buttons, etc.  They are often overlooked as they form part of the backdrop to more significant applications and information.  However, the very fact that they are the persistent backdrop of interaction makes their fluid usability crucial, like the many mundane services, buses, rubbish collection, etc., that make cities work, but are often unseen and unnoticed until they fail.

Also note that this failure was not due to any single feature or bug, but the way these work together what the telephony industry originally named ‘feature interaction‘, but common across all technological systems  There is no easy fix, apart from (i) thinking of all possible scenarios (reach for your formal methods in HCI!) and (ii) testing across different devices.  And certainly (Apple please listen!) if it ain’t broke, don’t fix it.

Happily, I did manage to find the post in the end (I forget how, maybe random clicking) and it is “5 Ways To Hack Your Brain“.  The individual post page has no dynamic additions, so is only two screens big on my display (phew), but still scrolled all over the place as I tried to select the page title to paste above!

  1. To my mind, early web guidance, was always wrong about this as it usually suggested making pages fit a screen to improve download speed, whereas my feeling, when using a slow connection, was it was usually better to wait a little longer for one big screen (you were going to have to wait anyway!) and then be able to scroll up and down quickly.[back]