Apparently the time tunnel can now send people to exact space/time coordinates, yet no one thinks to send Tony and Doug to the exact coordinates of the present-day tunnel complex.
For some reason the alien makes a distinction between "sun" and "Canopis," but muddles his own argument. He says his people are not powered by "sunlight" but by "Canopian-light." But "sun" is a general term (like "moon") as opposed to a specific name ("Sol"). So "sunlight" is correct usage of the term on an alien planet.
These people immediately shut down once their sun disappears. That means they are solar-powered with no capacity for energy storage. This doesn't make sense. If they photosynthesize like plants, surely they'd store energy for use during nighttime. Just as humans store energy for times they aren't eating. Without power sources, these people can't even go into a poorly lit room.
Don't they have replacement parts in the future? The Curator seems to assume the Time Tunnel staff can't replace the time/space converter and he's stymied them by taking the part.
Why does the alien Canopis computer use "Anno Domini" (A.D.) when providing dates for its records?
Doug: Why us? We're not geniuses.
Curator: It'd be easier if you'd submit to us.
Tony: You don't give us much choice.
Curator: That's true, isn't it.
Doug: What is it?
Curator: It's our time machine. It's simple, isn't it. But all great things are simple.
Tony: I don't get this.
Doug: Neither do I, but I doubt we're supposed to.
Lee Meriwether is on record as saying that this is her favorite Time Tunnel episode because hers was the central character and she finally got to act with series stars Darren and Colbert.
Michael Ansara had previously played Hruda in the episode "Secret Weapon." Of course, no one comments on the similiarity.
Was part of the compilation movie "Raiders From the Moon."