Economics has always wanted to be like physics, where you can base a prediction on an invariant set of laws. In reality, economics is much more like medicine in the pre-penicillin age, where a series of signals combine to form a complex and nuanced picture from which any diagnosis is tentative, any prognosis is nearly impossible, and any potential cure is going to involve a relatively blunt instrument.  Nowhere in Irish life is the gap wider between diagnosis and potential cure than housing. Housing is complex, complicated, political, distributional, financial. Housing is all of these and more. A solution that…