Question

A scientific theory can never be disproven.

Answer 1

Let's try it this way. I'm going to write down a pattern:

1 2 3 4 5 6 7 8 9 10 11 12 ?

What's the next number? Did you say 13? WRONG. It's 1. Because the pattern I had in mind is the hours of the day, and after 12 comes 1 again.

This is a simplistic example, but it's the basic idea behind science. The universe continually throws experiments at you, all the time. And any one of them could be the one that breaks the pattern, no matter how carefully you've observed it and no matter how well your theory has held up so far.