Kuhl theorizes, an infant's mind looks for patterns in the sounds she hears, locking into the more frequent sound patterns. As time goes on, the infant becomes increasingly adept at distinguishing the sound patterns of her own language and ignoring those that don't fit into the patterns she's already identified. This amounts to strong evidence that humans in fact possess a patterning instinct rather than a language instinct.
Not language instinct but patterning
