Alright, another thing that bothered me was if pressure is put on the skull, is it possible to cause brain damage? The diagnostics for a concussion is a severe and violent shake of the head, but what if there is no movement of the head, but instead simply a bit of pressure on the skull. Isn't the skull build to withstand pressure without the brain getting affected? A demonstration could be, taking the palm of your hand and pressing down on your head hard. Could this in theory affect the brain? Or does it just feel that way. So yeah, my question is pretty much, can pure pressure reach the brain, from external forces, i'm not talking intracranial pressure just so you folks are aware.