nimh wrote:1. Even the worst terrorist attack killed only a fraction of the deaths that any major natural disaster wrecks.
Point taken, though I disagree with the
any in the above quote. Katrina, and the Dutch 1953 North Sea flood (the type of catastrophy you would expect global warming to make more frequent) were major disasters, yet they were sub-9/11 in their death toll. (Same ballpark though.) Still, you compared the worst terrorist attack in recent history with the worst natural catastrophy in recent history, which seems reasonably fair on the face of it. But I believe that on a second look, it is not. See my argument below.
nimh wrote:2. Ergo, even if climate change would cause a couple of natural disasters extra - ever; forget the "a year" bit I added there - it would instantly whack out the balance.
What irks me about this comparison is that not all natural disasters are created equal. Here's an exaggerated analogy to make my problem clear. Suppose that five years ago, a comet had hit Africa and wiped out its entire population. That's a natural disaster, and not an entirely implausible one.
Something like it happened to Jupiter six years ago, and there's no reason it couldn't happen to Earth. Now suppose that collision actually had happened to Earth, and today somebody, in a discussion of global warming, offered this argument: "If global warming causes just one natural disaster like the comet impact, that already would bring the balance out of whack. 9/11: 3000 people dead. Comet hitting Africa: 700 million people dead."
In this hypothetical example, I am sure that you, too, would find the comparison absurd. You would find it absurd because a comet impact is one type of natural disaster, while hurricanes and rising sealevels are an entirely different category of natural disaster. The root cause is completely different. So the death toll of one is no meaningful proxy for the death toll of the other. I have the same problem, albeit in much milder form, when you use not comets but the Earth's seismic activity for comparison. It's not quite as extreme, but you are still comparing numbers that are meaningless to compare.