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The opening soundtrack is off on this episode: the opening music is actually out of sync with the credits, so that it ends about a second before the final "LAND OF THE GIANTS" appears on screen, resulting in dead air.
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What's the relationship of the teleporter viewscreen to what it teleports? Apparently the user brings up a picture of what is being sent, but when they lock on to Earth presumably they are bringing up the picture of what they are teleporting to.
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The title, perhaps the shortest and most generic possible, has no connection or relationship to the contents of the episode.
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Kirmus' boarding room interior bears a suspiciously close resemblence to the Senator's study from the episode "Pay the Piper".
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Dr. Kirmus refers to "solar system charts". There is technically only one solar system (i.e., the system that orbits the star Sol).
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Dr. Kirmus has never heard of Earth. This seems a bit odd, given the giants know about Mercury and Venus (in "Target: Earth") and occasionally refer to the little people as "Earthlings".