|"Everything we see is an hallucination generated by the virtual reality machine inside our head," comments Prof Mike Morgan of The City University, London.
"Normally these hallucinations are vetoed by the information coming through our senses, so we can call perception 'controlled hallucination.'
"But when the input is ambiguous we can see all sorts of things, like the faces de Quincy saw in clouds and carpets. There are hundreds of faces hidden in the textured floors of the platforms at Euston Underground Station, if you look for them."
~ Professor Mike Morgan (21Feb2008)