The force of the measuring is not exactly what the brain sees. So, the person that is about to get hit is seeing where the “hitter” is coming and knows when himself is going to get hit. But, the brain can’t see from where the “hitter” is coming from. The direction that the player is struck on is different within the brain. The face mask can make that sort of twisty more extreme. The force that is put on the brain is different and the direction that the player is hit at can be extreme. Scientists say that in order to protect the brain there should be new restrictions