It isn't making mistakes that's critical; it's correcting them and getting on with the principal task.
Donald RumsfeldThere are known knowns; there are things we know we know. We also know there are known unknowns; that is to say we know there are some things we do not know. But there are also unknown unknowns - the ones we don't know we don't know.
Donald RumsfeldControl your own time. Don't let it be done for you. If you are working off the in-box that is fed you, you are probably working on the priority of others.
Donald Rumsfeld