Berger's article on the Power Law Model for Bitcoin is a compelling read and gives the best evidence so far of the diminishing case for retracing below $3000, of a slowing market on a log-log plot, and reducing but continued volatility.
After seeing it acts as support routinely in the last 10 years, I put together a quick little script that plots his midline curve for Bitcoin. You can change the intercept and slope but will need to do your own calculations for other curves.
I published the wrong graph, annoyingly, and the iPad is a nightmare to work with. I'll put together a proper one that shows the 10 year curve. It's the one you see on twitter quite a lot.