Again from www.creationscience.com...
“It was Charles Darwin who first linked the evolution of languages to biology. In The Descent of Man (1871), he wrote, ‘the formation of different languages and of distinct species, and the proofs that both have been developed through a gradual process, are curiously parallel.’ But linguists cringe at the idea that evolution might transform simple languages into complex ones. Today it is believed that no language is, in any basic way, ‘prior’ to any other, living or dead. Language alters even as we speak it, but it neither improves nor degenerates.” Philip E. Ross, “Hard Words,” Scientific American, Vol. 264, April 1991, p. 144.
That's because all languages that work are as complex as they need to be, no more and no less. Languages don't "evolve" from "simple" to "complex." Many evolutionists cringe at thinking that lifeforms do as well. Evolution means "change" not necessarily "getting more complex."