I often ask myself, "Why is the world the way it is? Why do atoms stick together and form objects like desks or people? Why is anything a solid material?" I know it's probably electromagnetism or something, but if creatures on Earth can participate in natural selection, then so can anything else.
In Physics, we were learning about the normal/support force and how roller coasters work. I wasn't comprehending why the support force existed from the track to the car, so my professor made up a more basic example with a table, the floor, and a book. There is the normal force of the table on the book, and of the book on the table, and also the normal force of the floor on the table! I understood how it worked well enough, but I was still completely confused as to WHY the force exists. The answer was that the normal force is keeping the table from falling into the center of the Earth.
But still, I ask, WHY!
Then I thought, perhaps way back when, the universe would try out different realities of physics that, through trials and errors, resulted in a matter as solid as Earth. Perhaps a planet like Earth might have formed, but the only difference was that physics allowed objects to fall right through it. Maybe the planet's own will to survive has allowed the physics of solids and support forces to exist.
