when I run something as root I always triple check. One of my dumbest mistakes was a typo in a script (that was completely stupidly written anyway)
rm -rf $PATHTYPO/*
...yeah... luckily I was not root but if I were... boy...
What is wanted is not the will to believe, but the will to find out, which is the exact opposite. -- Bertrand Russell, "Skeptical Essays", 1928