Hi /sci/, I'm at the moment getting into 3d animation and sometimes I try to improve my really poor programming skills in Unity Engine, however I noticed most rotations in Unity are usually done with quaternions instead of euler angles and in 3d animation and modeling gimbal lock is a really big issue with cameras and most objects. I already tried to understand what's in wikipedia's article but I don't really get how does it all actually works and I'm confused about that fourth "variable" (called w in Unity). In other words, explain me quaternions in a way any retard could understand.