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brazil84 comments on Carbon dioxide, climate sensitivity, feedbacks, and the historical record: a cursory examination of the Anthropogenic Global Warming (AGW) hypothesis - Less Wrong Discussion

3 Post author: VipulNaik 08 July 2014 01:58AM

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Comment author: brazil84 10 July 2014 12:10:53PM 1 point [-]

Though both are individually weak (because of the problems mentioned), in concert, they provide a resonably compelling case.

I would have to disagree with this. I'm sure you would agree that you need to be careful before concluding that a bunch of weak evidence, put together, adds up to strong evidence. The classic example is psychic phenomena. There is lots and lots of weak evidence of psychic phenomona; including (allegedly) controlled experiments.

In the case of climate research, there is a potential problem of systemic bias. As climategate revealed, many climate scientists are more than disinterested observers; they are advocates for a position.

By analogy, imagine if Uri Geller wanted to convince the world that psychic phenomena are real. If he had 1 or 2 pieces of really strong evidence, it might be convincing. But if he presented 100 pieces of weak evidence, you would correctly dismiss his argument.