Well? They’ve made double and triple necked guitars. They make 3, 4 and 5 blade razors (copying a joke from SNL of course). They make dual exhaust systems for cars and motorcycles. They made double and triple winged planes. Even double and triple hulled ships. But I’ve never seen a sword with 3, 4 or 5 blades in parallel. What gives? No, I’m not talking about crap like this. I mean seriously: When you’re slicing up some dragon, don’t you want the closest possible shave?