The moment it became clear that Hurricane Sandy would likely batter the Northeast, swarms of speculators descended into markets there. They stormed into supermarkets, hardware stores and gasoline stations. You’d think that the politicians and pundits who reliably and boisterously criticize speculators would have condemned this pre-Sandy speculation. But oddly, they did not. In fact, they actively encouraged it! I heard them myself on television and radio: “Stock up now on batteries and water,” they repeatedly implored the speculators.