To return to a point in your life that you have already lived is metaphysical. Déjà vu, as most of us call it, feels mystical, even if it has a chemical explanation. Scientific evidence aside, to relive something that you have lived before is an experience that seems to connect us with something beyond ourselves. We can both be in the moment and be able to predict (or at least have the feeling that we are predicting) what is coming around the next corner. But to experience déjà vu and to be able to improve upon the actions that once were? Now that is something different altogether.