726 episodes in 6 tv shows (if you count TAS...and I do). Its pretty much impossible to maintain the sci-fi aspect of a sci-fi tv show over that many episodes without sacrificing the "science" of sci-fi to plot drama (fantasy). The teleporter, holodeck, and warp coil are just 3 aspects of the ST universe that blur the lines between magic and sci-fi whenever the plot needs them too. When is sci-fi really fantasy?