[quote=@DarkwolfX37] Luckily, people have done that work for us. And it's sort of like how you're confident that a homo sapiens will have a weakness to head injuries, or that a bird will be heavily affected by a wing injury. It's in their "design" so to speak. [/quote] In that case, how many different categories could an angelic being with barriers and light fit into? With one wing, if that's relevant.