eli5 – Basic Thermodynamics : The universe tends towards chaos and disorder

Question

How is disorder/chaos in the universe caused?

In: Planetary Science

Answer 1

Think of it this way. There are more ways for the universe to be disordered than it is to be ordered.

Imagine asking a group of people to stand in a line. There are 2 arrangements that might be considered ordered:

1. lined up shortest to tallest, or

2. lined up tallest to shortest.

There are MANY others ways to be lined up NOT in order.

Disorder is just much more likely.