This is a good story, I really appreciate the visualizations, they help us to see what it might look like, which is important for changing perceptions about density. That said, it seems like the demand to be in a place like SF or NY is so high, that even with that many new units, you are really just opening the door for even more people to move there because it has become affordable. Affordability in real estate is just another example of how many parts of the economy have far outpaced the incomes of the 97%, similar to college education and medical costs. I wonder if it isn’t really something having to do with people not making enough money, along with a shortage of supply. How many people can be housed in SF? How many should?