I'm new to Data Science and I was surprised to see many basic questions down voted. See this example.
The asker has not understood something and actually the comment by @Emre is a good answer and can help many people having the same question.
Since the comment was up voted 5 times, it means that the question was not so stupid/irrelevant/[your definition of bad question].
If we down vote each question that the right answer is RTFM, StackExchange should have 80% of its questions with a negative score.
It also prevent some people to ask good questions fearing to be down voted.
What do you think?
PS: please do not down vote my first question on Meta ;)