Star Trek is known in this forum to have quite a few logical inconsistencies. But these are understood to appear between information presented in different series or, at least, different episodes (for example, by TNG-Relics, Scotty not knowing Kirk died in ST-Generations). I have rewatched some star trek episodes lately and was somewhat surprised to find that, even within some episodes, the logic of the plot or of the crew's actions is rather lacking. For example: TNG-Deja Q: During the episode, it is established that firing photon torpedos at Bre'el 4's moon will only fragment it; and that the moon is too big to be moved by tractor beam. Well - the obvious solution is to fire the photon torpedos at the moon, then use the tractor beam to move the smaller fragments, one at a time. But none of the crew figured this out; instead, they came with a technobabble solution, as if de facto rewriting the laws of physics is easier than a simple logical deduction. TNG-Cause and effect: During the episode, the crew figured out they are in a time loop. The obvious idea of changing the ship's course was presented. And refuted - why? Because changing the course could have gotten them into the time loop in the first place. Well - prior to the first loop, the crew would have had no reason whatsoever to change course; meaning, not changing course got them into the first time loop (and the subsequent ones). But none of the crew figured this out, letting themselves be fooled by an argument that falls apart after little analysis.