The failure of global climate change models: scientific hysteria
No subject in the history of science has depended more on models and computer simulations than the science of global climate change. If you look back into our history, our knowledge of the distant past has been derived from studies of the the geological and fossil record that have been going on for more than two hundred years. And increasingly the view we get from these studies is that cataclysmic climate change can occur. But all of the past events have not been created by humans, but from other causes. If you try to look forward, by predicting our future climate conditions, it all comes from computer models and simulations that are extremely limited in their capacity to incorporate all the variables, primarily because the variables themselves are insufficiently understood. Events in the last few years have made it very clear: we don’t understand the variables that we need to know about in order to generate global climate change models that can tell us something which will give us confidence about our future. In the past year, we have witnessed the utter collapse of models that have proven the conservative nature of science and the scientists who study global climate change. There may not be enough time left to fix the problem. Climate models are being scrapped or rapidly revised to see if better predictions can be achieved by exploding the models to include as much as possible. I tend to think that this mass hysteria is going to fall short, simply because of the scale of the problem. I have spent a good part of my scientific career developing models of nerve cells, so I know something about how long it takes to get models that have good accuracy and I think the planet is probably more complicated than the single nerve cells I study and model. It is possible that we are at the beginning of a global emergency on climate change, but don’t know it yet because the computer models haven’t predicted it. But those models are now completely discredited and not because of a bad strategy, but because they aren’t sophisticated enough to be useful and helpfully predictive. They confirm that we may have a future problem, but they haven’t been able to predict the events of the last few years, particularly with respect to the melting of the polar ice caps and what this might do to sea levels and global temperatures.
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