A number of years ago I posted a comment on slashdot that “as scientists, we had better be right about global warming, because if we are wrong, it will provide ammunition to every crank and huckster who would demean science”. In all of the following, the “They” is us. Scientists. If we, the science communithy, are wrong about global warming, what will be our defence when Jenny McCarthy says “see! they were wrong about global warming and they are wrong about vaccines too!” or a fundementalist says “see! they were wrong about global warming and they are wrong about evolution too!”. Yes. We the science community had better be right because in this case, and only in this case, science has said: There is NO doubt. This is truth. We can argue about the rest mass of a proton, but we brook no argument about the chaotic impacts on climate of increasing one of hundreds of variables that impact climate. Such certainty is hubris, pure and simple. Science will out. The truth will be known. If it assures us that increasing carbon dioxide increases temperature, hooray! We are safe. If it does not. . . Who knows.