Stoic practice must be allowed to mature and change in ways that represent modern knowledge, not modern morality, mind you. I watch cartoons and animated films all the time, and I find them to be a comfort in a serious life. It's like a nice break. And there's a chance that Marcus would have thought of this as a childish waste of time. But as I've said before, we know things about the human mind today that Marcus didn't 2000 or so years ago. Things that he couldn't have known wasn't his fault. He couldn’t have known these things.