Mentifex on Concepts
Chatbots, starting with Eliza many years ago, have a tendency not really to think but rather to anticipate expected inputs and to trot out canned responses to answer the inputs. More modern chatbots will find voluminous information for a user and speak the information out loud without even understanding what is being said. An AI Mind, however, builds up a concept for every English word that the AI knows and uses. Mentifex-class AI Minds in Forth or Perl or JavaScript have an OldConcept module for concepts already known and a NewConcept module for learning any new word and conceptualizing it.