Greg Cox wrote:
To add a bit of historical context, however, nobody back in 1966 worried about shows being too "Monster of the Week." That wasn't even a term back them. Nobody expected ongoing story arcs or character development on network shows, let alone sci-fi adventure shows. Heck, "The Outer Limits" was literally a Monster-of-the-Week show and "The Twilight Zone" was an anthology series.
Well Greg, the term was not there when TOS was first run (it popped up in the 1970s), but from friends who watched Lost in Space
on CBS ('65-'68), they said the series made them expect
a monster every week. Same with most seasons of Voyage to the Bottom of the Sea