Beto O'Rourke (NOT the guy pictured here) has left the building, specifically, the Presidential campaign. I begin that way because Beto's campaign always had a celebrity-celebrating Elvis-like aspect to it, Vanity Fair cover and all. If for that reason alone, I'm not sorry to see him go. Before he left, he did give us a chance to think about what the term "Overton window" means, especially in the context of gun control in the US, and in more particular in Texas. Joseph Overton, a free market oriented political scientist who passed away in 2003, and who IS the guy pictured above, originated the concept of a "window of discourse" encompassing all 'acceptable' positions on an issue, and since named after him by his admirers. The point is that only fringe thinkers believe proposition 'A,' and only thinkers on a contrary fringe, we shall say, believe 'E'. The current policy is C and the more sensible not-so-fringe reformers sa...