“Some of the world's greatest feats were accomplished by people not smart enough to know they were impossible.”

I have stumbled upon the mathematical formula for anti-gravity. Its so obvious that the solution has been able to evade the human race for eons. 

Its proven fact that cats always land on their feet when dropped form a substantial distance. It is also proven fact that buttered toast always lands butter-side down when dropped. Thus, if a piece of buttered toast were adhered to the back of a cat, and then dropped from the roof of a building, then the cat/toast contraption would be unable to fall, due to the fact the the opposite sides could not breach the comfort of the floor at the same second. The cat/toast apparatus would then have no where to go, thus spinning mid air without the ability to fall. 

Its simple math:

cat + toast = anti-gravity