Comment by toddh

The problem is this assumes you are able to predict now what a later version of yourself will regret later, which isn't possible. Every decision creates a different you which will value different things. A path that he takes now because of his imagined future no-regret prediction may have prevented him from taking a path from which he would have ended up learning something much more, which would have a completely changed his judgements about what he would regret. No-regret is a good aspect of making decisions, but he might want to through in a few principles and values into the mix as well.