Did you ever notice that when you drop a piece of buttered bread, it always falls butter-side down. (It happens to me atleast)
And when a cat falls, it ALWAYS lands on its feet.
So, If you took a cat, tied a buttered piece of bread, butter-side up, and threw it off a 10 story building..... Which side would it land on?
It lands buttered side down because it usually begins buttered side up, and generally makes one flip on it's descent.
Experiments have proven that it actually prefers to land buttered side up when dropped from it's side, because the indendentation made by the buttering creates a contour shape in the bread.
Cats land on their feet cause they don't want to look like idiots.
The cat would land on its feet because the cat actively moves its feet so they are pointing down; the bread just lands butter side down because its more heavy on one side. If a cat can already land light side down, a few extra ounces will mean didly.
Whereas if the cat weighed the same as the toast...or the toast is the same weight as the cat...
Why am I saying toast?? It's buttered bread, not toast...I must have something for toast...
So if the cat and the piece of buttered bread were both the same weights...
If they are the same weights then surely they will spin around in the air trying to be the one to land first...until of course the cat eats the toast off its back and plummets to the ground, landing lightly on its feet.