Update to the update: It looks like it was a mistake and they revised it back to 2174. The model is back on track. Our model is an effective instant bullshit detector.
All of today’s delta of 5.2% came from a single-day doubling in US COVID-19 deaths. This chart shows only US deaths as reported daily.
This data doesn't fit any model except the one where US medics and coroners write COVID-19 on death certificates without bothering to verify that the novel coronavirus is the cause of death. This is the result of a political rather than a medical or a scientific decision. Garbage data isn't worth modeling: garbage-in, garbage-out.