There is imo dire need for more great, general write-ups of Levin's work—writing which can get into the interesting details without losing readers (or really any (?) I'm not actually sure I know of any!) This seems like a useful contribution to me, I'm glad you wrote it—thank you. I'll be revisiting this a bunch as I continue to gather my thoughts about this.

Also, I maintain that one of the wildest things that has ever happened is that Levin showed not just that the worms can generate a head of a different species but that the frequency with which they do is _proportional_ to how far that species is from them, evolutionarily speaking. Wtf!