This addresses the idea that gestures quickly change in humans from a sole means of communication (from a very young age) to a supplemental and predictive behavior that we use despite being able to communicate verbally.
To upućuje na ideju da se gestovi kod ljudi brzo menjaju od samo sredstva za komunikaciju (od vrlo ranog uzrasta) u zamensko i predvidivo ponašanje koje koristimo uprkos tome što umemo da komuniciramo verbalno.