No one need deny the importance of language to thought and cognition.
At the same time, there is a tendency in studies of mind and mental fu
nctioning to assume that properties and principles of linguistic, or l
anguage-like, forms of representation must hold of forms of thought an
d representation in general. Consideration of a wider range of symbol
systems shows that this is not so. In turn, various claims and argumen
ts in cognitive theory that depend on assumptions applicable only to l
inguistic systems, do not go through or become difficult to state in a
manner that makes them both interesting and plausible.