You must log in or register to comment.
consider two sets: set a and set b. both set a and b contain all horses, ane nothing else. they are always equivalent.
Gotcha. So all horses are purple?
But how can set b contain all of the horses if they’re already in set a???
Sure, but does the set of all sets that don’t include themselves include itself?
I wouldn’t trust on category theorists discernment. They are patently bad at it.