The maintenance lifts that he took to get to the top were nerve wracking even for someone who is used to heights. "There's the beach, parks, and there are some other touristy things I don't normally bother with. Because you know, tourists. But there's fisherman's wharf, seals, China Town, and sports stadiums if you're into that kind of thing."

"And I'm sure, none of that compares to living on a spaceship. And you have to be seeing some awesome things on a research vessel, though that depends on what kind of research you're doing."

Marcus has all bit lost interest in talking about San Francisco. And the video about the city has all but finished, and he just lets it play on. "Well to me you're an alien who looks human, and I'm also an alien who looks human to you."