Training Theory

Barbara and I hypothesize that the clicker is a conditioned "joy" stimulus that is acquired and recognized through those same primitive pathways, which would help explain why it is so very different from, say, a human word, in its effect. If this is true, another contributing factor to the extraordinary rapidity with which the clicker and clicked behavior can be acquired might be that the click is processed by the CNS much faster than any word can be.

Humans are notoriously verbal creatures. We love to talk, and we do so automatically, even when the person we're talking to doesn't speak our language, can't hear what we're saying, or even when the "person" isn't a person at all.