According to a recent report from the ESRI, Ireland’s population is expected to rise from 4.9 million today to six million by 2050.  It’s great news, to be sure. Sort of like surprise twins. But in order to accommodate 1.1 million new compatriots, we’re going to have to make some changes. There are but three ways to accommodate a booming population. We can build outwards, build upwards, or not build at all. I’ll call them the Houston model, the Tokyo model and the San Francisco model. Ireland has to pick one.  Don’t build San Francisco’s economy is like Dublin’s on…