I don't know where they get that 50/Ha figure. Paris is more dense than Seoul, with just over 200 people per Ha, or ~20k/km². Figure would actually have been h

I don't know where they get that 50/Ha figure. Paris is more dense than Seoul, with just over 200 people per Ha, or ~20k/km². Figure would actually have been higher at the 1999 date of the cited source, too. The city is (slowly) losing people.