Physiognomy
Physiognomy was the belief that the study of a person's external appearance, esp. the face, was reflective of their character or personality.

Captain Picard attended what was supposed to be a physiognomy  at a three-day psychological conference discussing the effects of deep space assignments in late 2369. The presenter, Doctor Vassbinder, was not aware of the intended subject and instead gave a hypnotic hour-long dissertation on the ionization effect on warp nacelles. Vassbinder's droning, pauseless presentation style prevented the attendees from alerting him to his mistake. ()

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Physiology