On some gestures' relation to talk

A common understanding of talking holds that at some point a conception or intent is formed in the mind of a speaker or potential speaker to say something or to use some word or construction, and that the talk that is eventually produced is an expression or realization of that intent, with something having occurred between conception and birth (I suppose we might call it "gestation") that converts the intent or conception into the form in which it emerges from the mouth.