The keyword here is "theory".
Gravity is a "theory" is it?
Yes, it's an unproven theory.
Let me ask you this child - when was the last time gravity did not work as we said it would?

It's been a few years but, it was the last time I played with a slinky if I recall correctly.
Every step you take, you
literally rely on the law of gravity to pull your foot back down to the earth.
That is how you walk.

Gravity is a theory, the force pushing you down is caused by the atmosphere you've displaced.
Go hang youself you little bitch
Hmmm, doesn't that rely on.......
gravity?

Nope, just a slinky and a sack of shit in the liquid or gaseous medium of your choice.