Answer (1 of 14): The term “continuity error” gets thrown around a lot in reference to Trek, oftentimes erroneously.
Some of the most famous “continuity errors” can be explained with a little imagination and common sense.
WHY DOES KHAN KNOW CHEKHOV IF CHEKHOV WASN’T INTRODUCED TO STAR TREK UNTI...
Yyyyeahhhh… 😬 That’s not exactly planned out.
Also, the idea that Borg are fine with other beings running around their ships as long as you don’t point a phaser at them, or other aggressive gesturing I suppose. That’s out the window by the time of VOY “Dark frontier”, Janeway and Tuvok are carrying phaser rifles at the ready all around the Borg sphere.