The evolutionary response is for your brain to be lazy and to not consume that amount of energy. So rather than constantly thinking about things and having things at the forefront of your mind, it's going to be a little bit more relaxed and not bring those to you. But this is good for to factor stuff. It's not so good for our tests that we're going to have in a month or so, if we learned the information to day and then it just goes away. Ye absolutelys. What I'm talking about here is memory decayur. And there's a physiological aspect tof that as well as that.