Bob doesn’t believe in global warming because it doesn’t fit into Bob’s eschatological vision of the world. For him, God is in control. And since God is in control, there is only one way that the world is going to end: With the second coming of Jesus. So any theory that posits the idea that man can wreck the planet is a theory can’t fit into Bob’s tiny little mind.
Bob’s main argument to refute global warming is point out the hysteria over global cooling from the 1970’s. In Bob's mind, claims about global warming are equivalent to the thirty year old claims about the approaching ice age. The problem is that there no scientific predictions of global cooling in the disco era. The notion that there were scientists running about and warning about the next ice age is a myth. And as with most myths, it started with actual empirical facts:
Firstly, there was a trend of cooling from the 40's to the 70's (although that needs to be qualified, as hemispheric or global temperature datasets were only just beginning to be assembled then). But people were well aware that extrapolating such a short trend was a mistake...[s]econdly, it was becoming clear that ice ages followed a regular pattern and that interglacials (such as we are now in) were much shorter that the full glacial periods in between. Somehow this seems to have morphed (perhaps more in the popular mind than elsewhere) into the idea that the next ice age was predicatable and imminent.
But Bob hasn’t bothered to report this fact. I doubt that he’s bothered to look deeply enough to learn any of this. But in typical Dutko fashion, he would rather perform a cursory examination of the data and make wild-eyed predictions. And at the end, he makes a massive guess about the future. Bob asserts that in the future there will be record cold temperatures.
But who would you rather believe? Bob, or climatologists and scientists whom actually study the issue?