Scotty rocks in that episode. I was so impressed with him the last time I watched that episode that I started a thread about it:^Except Scott. Right?
http://www.trekbbs.com/threads/scotty-in-the-galileo-seven.277295/
It seems counterintuitive to me to change it from the real-world usage to one that would only be used on Star Trek. If any viewers are confused by the first officer being second in command, they should turn off the TV and go learn a little about how the real-life military works.I guess my point is that the writers surprisingly consistently make the same kind of mistake. Which stems from the fact that the standard usage is so counterintuitive, and thus something a show depicting a bright future might decide to do away with. Clearly, Star Trek has not done so, though.