relearn a hundred years ago so many people didn't know how to read or write and that prevented them from being in the workplace in today's world not just in data science and machine learning but almost any vocation you have to learn you have to be able to learn to unlearn and to relearn so that to me is the most important reasons for having yourself a smart plan that's sensible that's smart and that's sustainable so that you can learn whatever skills and do that five 10 20 30 years from now to keep up and have