It's pretty much accepted fact throughout the hallowed halls of Star Trek Fandom, that that particular episode is one of the absolute WORST ever! It was one of the last of the original series filmed, if I recall correctly... and it's no surprise that they were running out of time, money and energy at that point...

The only one I can think of that I liked less was the one with the Comms and the Yanns (yanns???) Where the sacred document of the Yanns is the American Constitution of some load of bollox like that...

The attempt came too late, and was too heavy handed in it's exicution, to try to make the show more popularly appealing...