How was Scotty being an a** he was just a bit out of his time and behind on current engineering techniques and Geordi just had zero patience with him at all. I am a bit biased since Scotty is so awesome and yet Geordi is such a terrible engineer the Enterprise has a warp core problem everytime the wind blows.
And I get that everyone left, I was watching this earlier. I was just wondering if anyone wanted to speculate who they were and where they went? Was it from some ancient civilization, like the ones who seeded the galaxy, or something else? I just find it amazing that this giant structure goes unnoticed for such a long time and it is clearly within Federation borders for at least 80 years.