They say every day is a school day. While the Dáil rose last week, we all learned something new. We all thought we knew why we had a housing crisis in this country - the number one issue facing this country, as the Taoiseach just said. We thought we had a housing crisis because of the Government’s policies and flat refusal to restrict evictions and stop families falling into homelessness. We thought it was because of the Government's failure to raise building targets, weak enforcement measures to tackle vacancy and…