Op said how does the floor know with what force to push back. Well guess what Op, it doesn’t. It’s a coincidence. Suppose you had a vertical series of random

Op said how does the floor know with what force to push back. Well guess what Op, it doesn’t. It’s a coincidence. Suppose you had a vertical series of random floors that exert random levels of force. If you step on one and fall through, then you just fall onto the next floor. And if that one doesn’t exert enough force, you fall through that one as well. This could continue, until you finally hit a floor that exerts sufficient force back to you, and that is the floor you will rest on, perhaps forever, if these falls killed you in the process. It is by sheer coincidence you found a floor capable of holding you. In essence this is what must have happened at some point with everything in the universe, giving us the world we have today, a world built entirely by coincidence.