If you'd rather not learn about special relativity then they have tons of other courses on topics like complex algebra, calculus, computational biology, and since you're watching this on a computer, computer science.

如果你不想学习狭义相对论，他们有大量其他的课程，比如复杂代数、微积分、计算生物学，以及既然你是在电脑上看的，那么还有计算机科学。