Perhaps I've become an FP zealot, but I just can't agree at all with this author's suggestion. Small methods, "agile", unit testing, and all that are fine and

Perhaps I've become an FP zealot, but I just can't agree at all with this author's suggestion. Small methods, "agile", unit testing, and all that are fine and lovely, but none of them approach the kind of safety and composability you get from true FP.