From entry Wizard of Oz prototyping in glossary Statistics for HCI: Making Sense of Quantitative Data
This is a form of prototyping where some aspect of the interface that would be expected to be performed by a computer is instead performed by a human researcher, usually secretly. This can be used to try out ideas early before they are fully implemented, or even to explore technology that has not yet been fully developed.
Used in Chap. 2: page 31
Also known as: wizard-of-oz