Using a cubic would be idiotic, but also THAT IS NOT A CUBIC. CUBICS DO NOT ASYMPTOTE TO ZERO LIKE THAT.https://twitter.com/WhiteHouseCEA/status/1257680258364555264 …
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It's hard to see how the IHME model is especially good so far. It looks as if they try to retroactively fit a curve that was expected to be a hump. The assumptions going into the model don't seem to be sufficient to allow predicting future deaths better than other models