Yes, a good manager takes responsibility when something like this happens (as the author does). But how many good managers are there? It should be more clear on

Yes, a good manager takes responsibility when something like this happens (as the author does). But how many good managers are there? It should be more clear on who's at fault, maybe the bad managers will turn around about that. I saw an old work training film about management with Jon Cleese as some sort of angel (god?). He keeps explaining over and over again to the manager that it's his responsibility for everything. It's at least the starting point for a manager to figure out what went wrong.