[ Ah. Maybe that's why there's a lot of bluster, because he's essentially faking it til he makes it and doesn't want anyone to find out. ]

People here don't realize that there's more culture shock when you're Ported in than you realize. If your home planet's gotten past a certain level of technology or a certain level of exploration, then it's hard to view things on such a small scale as this Earth that hasn't even made it out of the galaxy.

[ of course, the Doctor is 100% off on his assumption that 'Mark's faking it because this planet's economic system is different,' but details, details. ]

I won't tell, by the way.