I would bet that not one productive conversation in the history of mankind has ever begun with calling the other person stupid. I personally am on this board because I have learned a lot and even when people disagree they are for the most part civil. We had quite a good discussion yesterday concerning hybrids. Not all of us agreed with each other however it was a civil conversation. I have learned in my life that you can learn something from anyone. It is probably best to not say anything if you cannot figure out a way to say it productively.