Hot moves to cold until there is balance. That's all there really is to it

Basically everything started out hot and is getting colder.

If you set poop on fire to start your car

heat transfer studies 😂😂

There are a couple of ways to look at this. In the paranoid ultrasimplistic world view thermodynamics is a form of black magic used to get useful work out of fire, electricity, and similar related demons. Alchemists find thermodynamics to be a study of the infinite interplay between various forms of energy and matter. The physicists have, as usual, tried to define rules for this alchemical study. They have had more success in describing and rule-binding thermodynamics than quantum entanglement.

Take mechanical engineering then you'll find out what is It troubles most of my students but it's really beautiful