Enjoyable, unfortunately will miss tomorrow night as at a pantomine.(I know there is always iPlayer)
It was good to see the use of visual illusions because, if nothing else, they demonstrate how easily the brain's perception of 'reality' can be skewed. I like the use of an actual Ames Room, because of the difficulty of constructing one, especially for Uni lectures, all that are ever seen are Ames' original photographs, which therefore do not actually illustrate the beauty of the original research.
The Necker Cube is also a very good illusion, but for me unfortunately I don't get the rotating part of the illusion.
The movable illusory square I have never seen, but very entertaining. I would love to find a use for some of these in my dark room!
The fact that a believer is happier than a skeptic is no more to the point than the fact that a drunken man is happier than a sober one.
George Bernard Shaw