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Andrew Currall's avatar

While I don't disagree with the more general point about environmentalism, I was a bit suspicious of the higher numbers on that carrier bag chart (what, 20,000? Really?) and so I looked up the source.

Sure enough, there is something rather fishy. To calculate these figures, the researchers evaluated all kinds of bag on many metrics, ranging from carbon emissions to human toxicity (there are about 20 all told). But they then obtained a "combined" score for each bag, by taking the *maximum* ratio over the basic disposable plastic bag! That's blatantly unfair. Cotton bags aren't really 7000 times worse than plastic bags overall; they're just 7000 times worse on whichever measure they perform worst at.

If you're only concerned, say, about climate change, the actual figure for a cotton bag is only 50 times, which is quite reasonable (I do in fact use cotton bags for shopping, mostly for aesthetic reasons and I've certainly used them more than 50 times).

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Enigma's avatar

"Unfortunately, I got a rebound infection."

I think this para got missed in the block-quotes?

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