Attributing infant abilities to conceptual mechanisms, in preference t
o (Fodorean) input perceptual systems or to a (Piagetian) deficit view
of action, makes it harder to understand how representational redescr
iption might work. Mapping between conceptual abstraction and represen
tational ''explicitation'' is unclear. It is better to treat the infan
t as a situated agent, whose pragmatic knowledge is grounded in a comp
utational model of action.