Quote from Specterx:
I agree with both of those.
My issues with GW are not with these basic concepts but along the lines of the following:
- The climate is always changing, completely independent of man's action, and on comprehensibly short timescales. It was only a few hundred years ago that we had the "Little Ice Age." It's by no means certain that merely letting the natural fluctuations play out would prove less costly, less destructive etc. than whatever effects GW will eventually have. They could well be incomparably more destructive - if, for instance, the Earth were to enter a full-blown ice age. I have very little confidence in our ability to accurately predict either those natural fluctuations, or the eventual magnitude and effects of GW.
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Yes but but the current temperature and CO2 increases are entwined happening at much higher than they have in the past. CO2 has not been at these levels in over 20 million years. And the fact that the climate has made rapid shifts in the past is cause for worry not solace. The system is easily tipped into extremes.
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- On the other hand, anything which retards economic growth (accumulation of capital) most certainly would leave us worse off in the future, and much worse off on scales of a century or more. Imagine if we had discovered global warming in 1750 and implemented remedial measures which reduced global economic growth by something like 1%/yr: billions of people would be today enjoying the living standards of Congo or someplace, world population would be much greater, there would consequently be more conflict, famine, and overcrowding etc. All for no perceptible improvement in the day-to-day weather patterns.
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Investing in higher efficiency pays. My field is HVAC and in the last fifteen years the units have gone up in efficiency some 60% through regulation. The extra cost is more than payed back in savings. By simply being smart we can save bundles without severe economic impact. This would leave us better off in the future.
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- Related to the above, we're rapidly exhausting our fossil-fuel stocks anyway. Prices are going up and usage will fall. The best thing would be to allow the economy to accumulate as much capital as possible, making the deployment of expensive alternative-energy (and also therefore 'clean') technologies feasible. Government taxes, regulations, and subsidies will squander vast quantities of resources without delivering any certain result or improvement over what would happen anyway.
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Many climatologists believe if we burn all the deposits we doom the earth to runaway feedback-loop climate change. The other thing is that CO2 by itself acidifies the oceans and kills coral reefs etc. and generally crashes the ocean ecology. This will happen regardless whether temps rise or not. Keeping in mind most of the earth's oxygen comes from ocean algae, this is rather worrisome.