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Politics : Foreign Affairs Discussion Group -- Ignore unavailable to you. Want to Upgrade?

To: neolib who wrote (224073)	3/14/2007 4:34:19 AM
From: Nadine Carroll	Read Replies (2) \| Respond to of 281500

Let me explain it another way that perhaps you can understand. Suppose your car has bad shocks. When you hit a bump in the road, the wheels shake violently afterwards. Now the best way to test for this is to stop the car, make sure it is at rest (equilibrium) then give it a sharp vertical push over a fender. If the shock is bad, the car will bounce several times with decaying amplitude. But it is still possible to deduce this while driving, even though the constant road adds additional motion factors which you must filter out. Actually, it's not possible to deduce this unless I know from other sources of information whether the road I am on is smooth or full of potholes. Since normally I do know this, I can easily deduce that the shocks must be bad. But if I were suddenly forced to drive over an unknown back road in the dark in a strange car, it would be very hard to tell the difference between a very bad road and very bad shocks. We have a similar problem with climate, since we can't stop it to give a sharp push on the fender. All we know is that it would be changing without us, maybe a little, maybe a lot. The question is 1) will CO2 levels keep rising and 2) will this cause temps to rise For that you need an established mechanism for turning 1) into 2). The hypothesis of greenhouse gas has some problems to overcome since during the first 30 post WWII years, when manmade C02 emissions were really climbing fast, global temperatures fell. They were talking about another Ice Age in the 1970s.