because without questions and answers can not talk about knowledge
or communication regardless of the expression
That would be one of the goals you can watch as a result of questions!
Do not you think?
and knowledge about what would be the purpose?
Just to get attention mostly for me
Sometimes I answer for the same reason lol
everyone has his own reason, i do ask to get answers
some times i ask to get answers or joking around or try to grab some attention.
I think you answered it yourself.