The process of gradual acquisition helps to avoid destroying existing vocabulary

Then, over multiple nights of sleep,the new words gradually transfer over and interweave with old ones.Researchers think this gradual acquisition process helps avoid disrupting existing words.So in the daytime,unconscious activity generates explosions of meaning as we chat away.At night, we rest, but our brains are busy integrating new knowledge into the word network.When we wake up, this process ensures that we're ready for the ever-changing world of language.