Post a question about any topic that remains fuzzy or unclear in your own mind that you would like to have others help you understand

Fuzzy Concept Question: Post a question about any topic that remains fuzzy or unclear in your own mind that you would like to have others help you understand.
Challenge Question: Post a question about any topic that is not fuzzy or unclear in your own mind but that you feel would be challenging to others.
Cite any sources in APA format.