The Evolution of Language

The idea of aliens who can't lie is very, very popular idea and sci-fi. In one of C.J. Cherry's novels, in the Chanur books, she has a race of creatures who produce a matrix, a word matrix, which no one can understand. You can't have a language like that because we don't have infinite brains. No alien creature could. And then the thing that drives me bonkers is this idea that critters might communicate by smell. Because it's just idiotic.