“When you make decisions, it’s based on your understanding of the world. You decide it’s asdfadsf ”

When you make decisions, it's based on your understanding of the world. You decide it's OK to walk outdoors because gravity will stop you from falling off the earth.nBut what if gravity is an illusion? I say, so what? If the world acts like gravity exists, it makes sense to behave as if it exists. Same thing will people. This idea is called Occam's razor.