This is the particular tragedy of sons against fathers. The father does not see it coming. The father still thinks of the son as his child, as someone he made, as someone who carries his hopes. The father may have failed the son in a hundred ways. The father may have been imperious, neglectful, demanding, disappointed. But the father did not expect the blade. The father was still, in some part of himself, waiting for the reconciliation, for the return of the prodigal, for the moment when the son would finally understand.