I agree it's not a good fit. Go is a language built for people who don't wish to learn any math or CS theory, for people who don't wish to be "computer scienti

I agree it's not a good fit. Go is a language built for people who don't wish to learn any math or CS theory, for people who don't wish to be "computer scientists" but rather "grug-brained programmers". The new datatypes will mean having to read things like "sz := sx.Union(sy)", and the union operation between sets is too math-like, and thus makes it less readable. "Advanced" data-types, like sets and heaps, only make code more readable to okay programmers, it makes code less readable to the average go programmer. To the average go programmer, a union operation is more readable as a for loop which does not have any math-y sounding name at all.