The program Science Friday looks at what happens when we are placed in a situation where reality is at odds with what we see. Even when we know exactly what is causing the discrepancy, a sense of disturbing disorientation sets in.
It is clear that one has to actually experience these things first hand to get the full effect and I would love to enter one of those rooms myself if I ever get the chance.
In this famous scene from the 1951 film Royal Wedding, the great Fred Astaire had the required sense of balance to overcome the disorientation and keep dancing fluidly even as the floor was shifting under him. On the left you see what filmgoers saw and on the right was how it was done.
The clip also reminded me of something that comedian Ernie Kovacs did on his old TV show, where he explored the comic possibilities of that new mass medium.