I also did not learn why people are so mean about this stuff.
Then let me explain. When someone is told something that is supposed to be learned before ever even posting and continually breaks that, is that not a reason to lose a little patience with them?
Yes, What did you not learn today is kind of a dumb topic,
Not just that, it's a dup of the thread, "What did you learn today" with NOT plastered in the title and OP spam.
but if it Really is a dumb topic no one will post in it. If it does get posted in, judging by the activity level on this forum, isn't it worth keeping?
That's beside the point, since this thread already is OP spam and basically a dup.