Feanor wrote:So having better data and experimental methods hasn't made science better. That makes no sense.
The methods can improve but the fundamental pitfalls of the study will never go away.
I can accept that most scientists feel strongly that man has contributed to climate change and won't fight a conclusion that people smarter and more informed than me have come to. It wouldn't surprise me at all if in 3 decades this is looked back upon in ridicule, but its the best info we're gonna get and is the only info upon which we can act. Granted these scientists aren't unanimous, and whether or not it is a 'consensus' is besides the point.
The conclusion that man is contributing to climate change is just the tip of the iceberg. The more important questions are to what extent are we contributing to climate change, and what can we expect to happen in the near and distant future.
Global climatology (or whatever they call it these days) is a field in its infancy. Even if the current consensus is that factors x, y and z are the best indicators and this is our best guess as to how they interact doesn't guarantee the accuracy of a model. If the factors aren't well understood or (most likely) dangerously incomplete the resulting computer model and predictions will be worthless whether or not it is borne out of a scientific 'consensus' that represents our current best guess.
Scientists aren't policymakers, nor should they be. The role of policymakers is to weigh all evidence before them and make a decision about the most prudent course of action. This is a highly subjective process, and is littered with pitfalls when the science is a relatively new field like global climatology. People can scream 'consensus! consensus!' all they want, but the conclusion that 'most' climate change is 'very likely' caused by man begins the scientific inquiry about climate change policy, it doesn't settle it.
Lastly, as an aside, I'm tired of the implication that the american right is the only group that has a political stake in the debate, whereas everyone else is nobly following the word of our dutiful and selfless scientists.
The environmental movements pre-dates the notion of global warming, and there are a lot of people out there to whom the notion that we must cut-back on emissions are music to their ears, climate change or no. I've sat through more lectures at school than I can count about how pollution and smog could have devastating effect on our future, make earth inhabitable, blah blah blah. Those same folks now use a different cause (climate change) to warn of the same conclusion.
I also recall a leading hurricane expert resigning from last years IPCC commission because they insisted on putting in their report that climate change would lead to more powerful hurricanes, when in fact there was no (and as AFAIK there still is not) any evidence that this is the case.