> "A LISP programmer knows the value of everything and the cost of nothing." Here, a very old quote that tells you directly what is wrong with FP - the perform

> "A LISP programmer knows the value of everything and the cost of nothing." Here, a very old quote that tells you directly what is wrong with FP - the performance on old hardware sucked. For a very long while compilers/interpreters were not good enough. The cost/benefit equation changed in recent years, and sure enough, FP ideas are becoming mainstream. Again, I'm not saying that array languages don't have fundamentally great ideas. I'm saying that articles like this one do them no favor - they're just smug rants. Show the world you understand the downsides, and you get a better chance of promoting the upsides.