One particular thing bugged me
After the episode in 1947 the characters kept referring to vacuum tubes as "transistors". These people were scientists and would know that there is one heck of a difference between them. Vacuum tubes are glass, fairly large and are immune to EMPs. Transistors are small, solid state and vulnerable to EMPs. I don't know if they did it so that the audience could relate, it the writers didn't know the difference or if they just figured nobody would notice it. I spent my early life as a radio/TV repairman replacing vacuum tubes and I know what they look like.
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