outsidethebox wrote:
Cooked Up Brit:
I agree with you that scientists are not qualified to ask the political, moral, or economic questions. But I have 3 problems with your analysis:
First, before we can start performing any cost-benefit analysis of future actions, we need to pass the threshold question of "whether man has any part in global warming to begin with." There's no need to reach question 2 without first answering question 1 in the affirmative.
Second, we need to realize that while we waste time answering question 1, the strategy choices for question 2 might be changing (if we answer question 1 in the affirmative). In other words, if we wait 30 years before we decide upon question 1, the costs might be much greater or it might be too late. That is why I think we don't necessarily have to be CONVINCED that global warming is occuring, we just need a strong enough reason to start taking precautions. In the same way, we don't need to be CONVINCED some foreign nation might bomb us before we take precautions (I'm using this example to illustrate the principle that you don't need certainty, not to compare the effect of global warming with a bomb).
Third, you portray the costs of taking precautions in absolute terms. It's not like we need to cut all CO2 emissiosn and return to the stone age. It's more just reducing emissions and finding alternatives.
Outside the box,
(i) I don't think we do need to answer question 1 before we get to question 2. Even if we conclude that man has no role in climate change, but climate change is harmful, we will still need to consider if action should be taken. The action to be taken might be different. Both questions need to be looked at simultaneously.
(ii) I agree with you here. If, after reasonable analysis, we were able to conclude (for example) that the risks of doing nothing were extremely high and that the costs of taking action were low, it might be sensible to take action even without answering or conclusively answering my questions. Factors that need to be considered here are (p) probability that harm occurs if no action is taken, (q) magnitude of harm and (r) cost of action. Do you think we have reached this stage? What about the action to be taken, what should it be?
(iii) I don't really think of actions as absolutes. I was just giving a few examples of actions: pointing out different possible directions. In reality the range of possible actions is vast! I couldn't begin to imagine all of them! (The examples I have were just indicative of categories of possible actions - i.e. trying to change back the climate to what it was before, trying to adapt to a new climate or trying to move humans to a place where there is a good climate.)
Are we agreed?