I've been trying to find a Kubrick/2001 anecdote I vaguely remember, maybe somebody here has a source? Roughly a lighting technician found the initial very bright point-source lights needed to illuminate the space ship models were dangerous and prone to fire. The technician explained this to Kubrick and Kubrick asked him to set up the current (hazardous) lighting setup again. The technician asked "you don't believe me?" and Kubrick said something like "I believe you, but I haven't seen it."