It always made me laugh that in the same episode they had Spock controlling the computer via gestures, a là Minority Report, and the computer PRINTING a readout.
(Actually, Spock is supposed to be gesticulating to a female character, a "secretary" operating the "slide projector" in a scene that would have appeared outdated back then already - but since the episode as aired leaves that character out of the frame, we get very welcome futurism instead...)
Timo Saloniemi