As far as implying that we know what we're doing, that we have perspective enough - by diving fully into something it requires a lot of denial, and denial is always dangerous even if all of your intentions are good and all your preparations are good. When you make a choice you're denying an infinite number of other choices.
The fathers greatest folly is that he believes he can be a much more simple person than he is; he is not really able to deal with his own complexity as a human being.