Some cases of implicit knowledge involve representations of (implicitly) kn
own propositions, but this is not the only important type of implicit knowl
edge. Chomskian linguistics suggests another model of how humans can know m
ore than is accessible to consciousness. Innate capac ities to focus on a s
mall range of possibilities, thereby ignoring many other, need not be groun
ded by inner representations of any possibilities ignored. This model may a
pply to many domains where human cognition "fills a gap" between stimuli an
d judgement.