Then someone at the table – and I couldn’t believe this – said, ‘My uncle smoked a hookah pipe all his life, and he lived until he was 90 years old.’ And I had a sudden flash of insight, which was this. Suppose you have something that actually kills half the people. Even if you’re a heavy smoker, your chance of dying of lung cancer is not 50 per cent, so therefore, even with something as extreme as smoking and lung cancer, you still have lots of cases where people don’t die of the disease. The evidence is certainly all around you pointing in the wrong direction – if you’re willing to accept anecdotal evidence – there’s always going to be an unlimited amount of evidence which won’t tell you anything.
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