Fantastic piece! This should be required reading in all high school (or earlier) together with pg's essay "How to Make Wealth" (http://www.paulgraham.com/wealth.html):

Kids know, without knowing they know, that they can create wealth. If you need to give someone a present and don't have any money, you make one. But kids are so bad at making things that they consider home-made presents to be a distinct, inferior, sort of thing to store-bought ones-- a mere expression of the proverbial thought that counts. And indeed, the lumpy ashtrays we made for our parents did not have much of a resale market.

As he points out, most everyone loses this innate understanding of creating wealth, making stuff, as they grow older. This guy has rediscovered it.

Oc course, this would have been impossible without the enabler of shared space, so we should have more of these.