Post date: May 1, 2016 5:28:06 PM
Link: https://www.scotthyoung.com/blog/2016/04/12/no-hard-subjects/
In short: "there is no subject that is intrinsically hard. Rather, it’s that some subjects appear hard because they have a lot of prerequisite knowledge, which often students don’t have. Once you obtain the correct background knowledge, most ideas are roughly equally easy to learn."