Manson,I agree with you that we can find those people in all walks of life. May be ratio of types would be different. Whether we argue in person or in virtual world, we are speaking of our own mind. May be we can find free flow of thought coz they are posting here from background. And Mansion, I do not agree that we are grown up in same structure If we were grown up with same socio economic structure, we would not have come across different kind of people. Yes, I have been trying to be silent reader for a while and I may fall in any of those Six categories. I did not claim to fall in any of those categories. Yes, meek_misfit ,there can be another category of indifferent people .Since A different world cannot be built by indifferent people as philosopher Horace Mann said,they may ultimately fall in one of above categories. Sndy, yes it is true for real world too. Kaalekanchha, you may be right. It may not worth penny. I respect that you have been doing PHD. Degree itself does not worth a penny if you can not justify your degree with your thought process. Thanks Be positive