There is a purple flag in Sarajevo, which, marking the spot Archduke Franz Joseph was assassinated, says, "This is where the 20th century began." I have not been there; I heard this on the radio.
What that banner marks though is really, a prime example of binary thought. Binary thought, which makes everything possible, must divide everything into one of two things, this or that. This is the 20th century. That is not.
I like this example because, regardless of the aplomb of the radio personality, it points up the absurdity of such divisions, the arbitrary nature of such cleavage.
Of course if there was a flag over each instance of binary thought, we would not be able to see anything real, just the thoughts. Oh--- wait -- we can't already.