How can randomness possibly exist?

[ZeeJustin]

When I think of the universe, I think of the laws of science, and randomness doesn't seem possible to me. Some people may use the double slit experiment to prove randomness exists, but that is simply something we cannot determine, and is not necessarily something that cannot be determined with more knowledge.

I think of the universe the same way I think of a computer program. The universe has a set of laws (or algorithms) that determine how the matter that the universe is made up of moves about. Just like an algorithm, someone can look at the "script" of the universe and predict what will happen next.

However, it is impossible for computers to do anything random. Sure, they can look at a super accurate clock, or use a huge set of predetermined numbers, but that is simply using outside sources to create the illusion of randomness.

It doesn't make sense to me that the universe has any tool to possibly create randomness. If you fully understand all the laws of the universe, and can map every particle that exists in the universe, then you must also be able to predict what will happen to each one of those particles. I can't think of how this could not be true.

This is why I do not believe in free will.