The problem is that jobs aren't nearly so fungible. In the software industry, those of us who succeed are used to constantly retraining ourselves, on our own di

The problem is that jobs aren't nearly so fungible. In the software industry, those of us who succeed are used to constantly retraining ourselves, on our own dime. This simply isn't true for most workers. Why aren't those coal miners retraining as data scientists? Everyone knows coal is on the way down, right?