Comment 7 for bug 145673

"when you copy-paste from a forum post or help dialog there is no
change of a typo provided the original command was vetted properly
(which I would assume to be the case if we put them in the docs)..."

Well, yeah, but then you don't know what you're doing (not that most people know when they are clicking things in a window, but they have the feeling they do), which is the reason that is scary.