Orias
Left Hand Path
That is how I feel about it too. Usually, my only exception to my "100% certainty, aka knowledge, doesn't exist" stance is the knowledge that I exist.
I try and keep it more simple, like being certain that I am uncertain.
But, I do find it hard to argue how 2 + 2 couldn't equal 4. So math is in my "maybe that really is 100% certain" category.
I think 2+2 couldn't equal four because when you put them together you get 22.
A guitar and a human are separate in a room, but once the humans plays the guitar, he is now a guitarist. This is addition, four exists because 22 is only fathomable after 21.
The numbers just keep going.