The authors argue that giving students a more “real world” math education makes much more sense than the abstract curriculum we currently teach. Math instruction is peculiar. It is often the home of really bad instruction. Yet some of the most adored teachers I encountered in my career were the really good math teachers. Students took math because the teacher cared.
I also figured out that students who will never integrate anything after high school took advanced math because they could be with their smart friends.
I don’t regret the math I took in high school. It was puzzle solving and had the added reward of being completely correct when you knew what you were doing. I will never be the man I should have been because I didn’t do calculus.