Yeah it’s a bad thing. It has a name, but it’s slipping my mind right now. A convex face? A Tri-planar face? It’s bad in a hard way to explain. But it causes lots of problems when subdividing and with loops and stuff. Imagine the top of a wood table, it’s straight, it would be a bad thing if you took that top part and somehow bent it but not even with a curvature, it’s as if the top itself had no consistency. You know what I mean? Anyways, I bet the other guys will explain it better. They’ll post sooner or later.
