I recently flagged an answer because I (erroneously, as it turned out) believed it to cause harm. The flag was declined on the ground that the purpose of a flag is not to judge technical content. Agreed. However, what if the advice really causes harm (say, it bricks a device)? What about malicious advice as in the following scenario:
Q: I am a newbie and I need help on xyz.
A: yada yada yada ... and
rm -Rf /
will do what you need.