It’s Carnival time in New Orleans, and that means that throw season has arrived. Throw as in the noun, a throw, not the verb, to throw. We’re talking about that time of year when revelers raise their arms in supplication for trinkets tossed from passing Mardi Gras parade floats. Of all the things that make New Orleans one-of-a-kind, parade throws may well be the most idiosyncratic. I don’t know of any other place on Earth where this ritual of tossing and catching from krewe to crowd takes place.