You may not really have a opinion.

As a general rule.
I'm more then willing to explain something to some one.
I'm more then willing to read something to some one.
I'm more then willing to wait for some one to go look something up.
But I'm no longer willing to have a discussion with some one who does not know what they are talking about.

Simply put if I pose a point and you don't counter it and simply put out your own point that I CAN counter. I lose, your no longer in the discussion.