If you think that immutability and laziness are inherently part of functional, then you're part of the new-school-is-the-only-school problem. I mean, I'm not s

If you think that immutability and laziness are inherently part of functional, then you're part of the new-school-is-the-only-school problem. I mean, I'm not saying that immutability and laziness aren't interesting. But FP has a long long history, most of it's not lazy, and immutability is nowhere near universal.