Definition of paradox
: something (such as a situation) that is made up of two opposite things and that seems impossible but is actually true or possible
: someone who does two things that seem to be opposite to each other or who has qualities that are opposite
: a statement that seems to say two opposite things but that may be true
Example: It is a paradox that computers need maintenance so often, since they are meant to save people time.
There are many theories involving paradoxes. One of my favorites is:
1. Watch this short video:
Paradoxes in movies from Screen Rant.
2. Consider the world you have created in your story. Do you have any paradoxes? Set rules for your created world and stick to them.