ELI5: Explain Like I'm 5
Examples: cannabis, heat death of the universe, systemic racism, stock puts, non-aggression principle

Fractional model

A fractional model is when you break a big problem into smaller parts or fractions in order to make it easier to solve. For example, if you have to do your math homework but it's too hard, you can break it into fractional parts and work on each part until you're done.