Justice

The filming location was right under the flight path of Van Nuys municipal airport, which meant that airplanes were constantly flying over the heads of the actors, and the entire scenes filmed there had to be re-dubbed in post production.

Much of the drama revolves around the Prime Directive, a rule against interfering in the natural development of other cultures. In Trek, the PD mainly applies to making any sort of contact with a society at a low level of technological development. (The threshold is generally accepted to be faster-than-light space travel.) Since the Edo have not yet reached FTL, the Enterprise crew should never have interacted with them at all.