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.

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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