Fun episode, though this is one that stretches the audience’s ability to suspend their disbelief and accept Trek-science. This is also another episode that introduces an alien as central to the plot device, but spends so little time with them that all the show deals with are the effects of the alien encounter and nothing else. Trek is lazy like this sometimes and it’s frustrating since the most interesting aspects of an episode are never really explored. But, for what it is the episode is not bad.