Constraint satisfaction is biologically and neurophysiologically plausible.
It changes our perspective on a number of issues. The who issue of nature vs nurture or innate vs learned is turned on its side. The idea, for example, of innate knowledge makes sense only from the perspective of an inherited symbolic store of information. Rather, it must be the case that babies are born with brains that function in some way. The way the brain functions appears as if the child has knowledge, but another way of thinking about it is that the brain performs certain operations and not others and changes its pattern of operation in response to maturation and tuning induced by environmental events.