We are a commune of inquiring, skeptical, politically centrist, capitalist, anglophile, traditionalist New England Yankee humans, humanoids, and animals with many interests beyond and above politics. Each of us has had a high-school education (or GED), but all had ADD so didn't pay attention very well, especially the dogs. Each one of us does "try my best to be just like I am," and none of us enjoys working for others, including for Maggie, from whom we receive neither a nickel nor a dime. Freedom from nags, cranks, government, do-gooders, control-freaks and idiots is all that we ask for.
That was fascinating, but there's a hidden agenda behind these optical illusions: To suggest that the human mind is incapable of observing "true" reality. That idea - passed down from Plato to Kant - is behind all of the tyrannies of the last centuries.
It is true that the human mind is incapable of observing "true" reality 100%. But the human mind excels at inferring and deducing reality which is proven by our ability to describe atomic and quantum mechanics.
Interesting bit, for history nerds, at least. The developer of the illusion was the son of a Union general who was the original colonel of the 20th Maine, Joshua L. Chamberlain's outfit. The general, also named Adelbert Ames, died in 1933 at the age of 97.