"[T]he natural world around us does not care what we believe."

The intersection of two earlier posts (What have you changed your mind about? and Climate 'clearly out of balance' ) leaves us with these thoughts about climate change, from two very interesting minds:
In The Irrelevance of "Probability" Nicholas Nassim Taleb (author of The Black Swan) writes

As I said, consider that belief (i.e., epistemology) and action (i.e., decision-making), the way they are practiced, are largely not consistent with one another.

Let us apply the point to the current debate on carbon emissions and climate change. Correspondents keep asking me if it the climate worriers are basing their claims on shoddy science, and whether, owing to nonlinearities, their forecasts are marred with such a possible error that we should ignore them. Now, even if I agreed that it were shoddy science; even if I agreed with the statement that the climate folks were most probably wrong, I would still opt for the most ecologically conservative stance — leave planet earth the way we found it. Consider the consequences of the very remote possibility that they may be right, or, worse, the even more remote possibility that they may be extremely right.

In his essay The importance of doing something now about the environment Craig Venter (Human Genome Decoder; Director, The J. Craig Venter Institute) writes

Like many or perhaps most I wanted to believe that our oceans and atmosphere were basically unlimited sinks with an endless capacity to absorb the waste products of human existence. I wanted to believe that solving the carbon fuel problem was for future generations and that the big concern was the limited supply of oil not the rate of adding carbon to the atmosphere. The data is irrefutable--carbon dioxide concentrations have been steadily increasing in our atmosphere as a result of human activity since the earliest measurements began. We know that on the order of 4.1 billion tons of carbon are being added to and staying in our atmosphere each year. We know that burning fossil fuels and deforestation are the principal contributors to the increasing carbon dioxide concentrations in our atmosphere. Eleven of the last twelve years rank among the warmest years since 1850. While no one knows for certain the consequences of this continuing unchecked warming, some have argued it could result in catastrophic changes, such as the disruption of the Gulf Steam which keeps the UK out of the ice age or even the possibility of the Greenland ice sheet sliding into the Atlantic Ocean. Whether or not these devastating changes occur, we are conducting a dangerous experiment with our planet. One we need to stop.
. . .
Our planet is in crisis, and we need to mobilize all of our intellectual forces to save it. One solution could lie in building a scientifically literate society in order to survive. There are those who like to believe that the future of life on Earth will continue as it has in the past, but unfortunately for humanity, the natural world around us does not care what we believe. But believing that we can do something to change our situation using our knowledge can very much affect the environment in which we live.
[Emphasis mine]