The Forum > Article Comments > Global warming hots up but not the weather > Comments
Global warming hots up but not the weather : Comments
By John McLean, published 4/3/2005John McLean argues that the predictions of global warming could be quite wrong.
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Do you put on your seatbelt when you get in a car? Surely it is not because you have conclusive proof on that day that you'll be involved in an accident. Traffic, like weather, is also a chaotic system where any such predictive surity is not possible.
What we all do know is that a range of factors (including some we can measure quantitatively - mass, speed, influences of alchohol on reaction times, etc) come together to mean that things might go wrong for us in the future. Therefore we take precautionary action.
There are plenty of other examples one might think of: flu inoculations, insurance.
You suggest that 'the only efficient way to deal with a threat is to understand it thoroughly and only then take action.' Unfortunately, in the case of climate change, this means in efect that we should do nothing until the effects of the changes we are so blithely contributing too are 'fully' in evidence (whenever that's supposed to be). In other words, when it is well and truely too late to take any sensible precautionary actions.
As you rightly point out, one of the FACTS! about this debate is that some people make an educated guess (the best kind of predictive effort we can make in the circumstances) that climate change tending to warm the atmosphere might, perversely, contribute to the on set of a mini ice age.
Is this any better that the prospect of increasing average temperatures? Does this somehow justify our childish and unnecessary messing about with complex systems that we cannot (in the sense of generating proofs of efects ahead of time) fully understand?