This is going back a few years.
They were using an Amiga 1000 and were running a program to demonstrate the eye's ability to distinguish a moving pattern against a stationary one. After a few seconds, the pattern would stop moving and "melt" into the background (couldn't be distinguished). After a bit, it would start moving again and "pop" into view. It was simple but very clever.
Does anyone know what this program was?
