Are they also my opposite in how they are good or evil, or just opposite in quantity?

For example, if I’m an antisocial asshole with positive ideals, does this mean my opposite is an extremely friendly and polite business major?

If you didn’t see the other comment, you really should check out the fanfic “Harry Potter and the Methods of Rationality.” It’s almost 2,000 pages, extremely well written, and (to give you an idea of how the story feels) one of the first things Harry does when he visits Gringotts for the first time is realize that since the wizarding world uses a precious-metals-based currency, a competent hedge fund manager could be the richest person in the wizarding world in about a week.

https://hpmor.com/

Thank you for posting this! I spent a whole day off reading it and even forgot to go to bed on time 😅