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Helluva memory this guy has...

Halfway down the article I could not stop thinking "how on Earth can he write all this from memory?"

I'm sure those engineers have a story or two to tell too... Great read, thank you.

If you're a visual person, you can basically just fuzzily re-walk the tour. Also, he presumably wrote this right after the tour, not weeks later.

I imagine this sort of experience is something most of us would not forget and that we'd be in awe the entire time.