Corrected entry: While Lieutenant Galloway is coming into sickbay and dies there is a window in the hallway with window blinds, and through this window you can see some of the production staff in regular clothing talking.
Corrected entry: Kirk switches back and forth between miles and kilometers in this episode (20,000 mile orbit, 200,000 kilometer range of destruction.)
Correction: The distances were described using the system of measure wherein the specific distance can be described by the most round number. Example: If something is 1.1 quarts, he'll just say it's one liter. We can assume humans can handle the conversion in their heads easily in the future.
Correction: The "production staff" is dressed in Star Fleet uniforms. They are not just standing around talking but working with something. There are even flashing lights in the background. The window is looking into a medical lab. Besides, the supposed error defies reason. Why would they build a window into a set and put nothing behind it?