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If you google the “worst prediction ever”, you will get hundreds of results that tell you it was the prediction of the cosmological constant that was infamously 120 orders of magnitude wrong. But there has never been any such prediction. Just where does this story come from and what is really the worst prediction ever?

I warmly recommend this paper about how much one can actually calculate of the cosmological constant: https://arxiv.org/abs/1205.3365

Sorry about the typo at 2:46

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