The colorful plastic chips work well enough to trick our dumb monkey brains, just like red notification bubbles.
Similar to the rat knowing the sugar comes very shortly after the task.
Think of the senses: sound becomes talking, music, etc. food become cuisine, obesity, and anorexia. eyes becomes art, movies, etc. desire becomes porn, s@m, etc.
meaning is constructed, socially constructed, or what skinner call "learning." His masterwork, long forgotten, is the "generic nature of stimulus and response." Generic as it open to near total manipulation
skinner was the man