He may have just been someone they dressed up to test the costume. Or maybe someone else who auditioned, don't know.
Scotty is by far the best engineer in ST history.
Think of how stupid the average person is, and realize half of them are stupider than that. -George Carlin
“Never argue with stupid people, they will drag you down to their level and then beat you with experience.” -Mark Twain
“When a great genius appears in the world you may know him by this sign; that the dunces are all in confederacy against him." -Jonathon Swift