human behavior

Many of us feel irked when we hear people speaking "incorrectly." Whether it's using "like" a few too many times, or the word "literally" to mean "figuratively," we have a sense that there is a correct way to speak, and that that isn't it. While new speech patterns might be irritating, the linguist John McWhorter says they can't possibly be wrong. His new book is Words on the Move: Why English Won't and Can't Sit Still (Like Literally).