Star Trek: "All Our Yesterdays"

Data
Title: Star Trek: “All Our Yesterdays”
Year: 1969
Network: NBC
Episode: the twenty-third (of twenty-four) from season three; 50 minutes
Creator: Gene Roddenberry
Director: Marvin J. Chomsky
Writer: Jean Lisette Aroeste
Starring: William Shatner
With: Leonard Nimoy, DeForest Kelley, Mariette Hartley, Ian Wolfe, Kermit Murdock
Music: Alexander Courage (theme); George Duning
Cinematography: Al Francis
Editing: Grant Hoag, Fabien D. Tordjmann
I saw it: on video and TV several times, most recently yesterday (have on DVD)
Synopsis: trapped in time

My reaction
Concept:
Story:
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Subjective Rating: 7/10 (Good, ). Wait, an alien world that's not evil? And isn't run by a computer? How can that be?
Objective Rating (Average):