What are the biggest moments of plot dissonance in Trek? Moments where they establish something somewhere then ignore it later. My top few. 1) Why don't they always set the phaser on wide beam? 2) If somebody is about to die but need to get proper medical equipment, why don't they just start them going at .9999999c without a warp field, effectively freezing time for them, then collect them when they are able to get the medical supplies? Relativistic stasis! 3) If in the Star Trek universe, DNA works by instantly changing somebody's body to the body they'd have if they were born with that DNA, why doesn't anybody use this fact for vanity purposes? Why aren't there plastic surgeons who operate just by changing someone's DNA then transporting them out and back in? Instant sex change or race change.