I've only made one technical screwup in my career, and a minor and fixable one at that, but it left a deep impression. These days, when running as root, I conc

I've only made one technical screwup in my career, and a minor and fixable one at that, but it left a deep impression. These days, when running as root, I concentrate hard on every command, asking myself whether this is really exactly the right thing in every respect. When my hands start shaking, I know my mind is in the right place.