This is actually an evolution, in that Evolution involves random mutations that aren't always beneficial. The four-arrows digital purity has been replaced by something with more shades of grey. This leads to inevitable hoots of frustration when you get boo'd for something you're utterly convinced you got right. But after a few games this happens less and less - which means it wasn't the game's fault, and you're actually getting better. Providing you're not after a Western selection of music, and can tolerate the built-in woolly imprecision, that's when you really start to enjoy Dance Evolution.