I see your point, but, I disagree with you because your comparison example has a much larger difference in the relation between the two subjects. Learning the c

I see your point, but, I disagree with you because your comparison example has a much larger difference in the relation between the two subjects. Learning the concepts behind operating system design isn't crucial or needed for something like web development. However, concurrency is something that's used and fundamental when programming in C++, and learning it should not side-stepped with libraries. Yes, you are correct to state that it's basically all relative and based on opinion and therefore we could go around in circle all day comparing everything. But I think that my point is a fair one when you have two things as closely related as concurrency and C++.