Neuro-Linguistic Programming (NLP) is an approach to communication, personal development, and psychotherapy created in the 1970s by Richard Bandler and John Grinder in California. NLP makes presuppositions that people already have the resources for change and that there is no failure, only feedback. NLP works with representational systems, including the five senses of visual, auditory, kinesthetic, gustatory, and olfactory. It also uses submodalities to understand the qualities of sensory representations and the meta-model to find explicit meanings in communication through questions. Sensory acuity allows inferring thoughts by observing expressions and body language.