This was made painfully obvious to mewhen trying to board a traintoXi 'an at Beijing's central railway station. The securityentrance to the station was, rather than a line, a crush of humanity.
One of the things that people who make enormous amounts of money intuitively understand (and the rest of us miss) is that the central magic of money, and what makes it among the greatest inventions of humanity, is that it can be transformed into anything.