...can often be enhanced by (and sometimes require) writing,
speaking, pictures/illustrations, and other non-symbolic
representations.
. These other representations are
useful, sometimes necessary, for communication not only with others --
but also for our own, internal understanding
-- Giving driving directions (requires remembering, thinking)
-- Writing a recipe for a friend (requires mental organization)
-- Preparing for a class/ Teaching a course (above & much more!)