Note that the problem with understanding the behavior of C. Elegans is not understanding the neurons, it is understanding the connections that are outside of the neutrons. From a New York Times article ( https://www.nytimes.com/2011/06/21/science/21brain.html ):
"Why is the wiring diagram produced by Dr. White so hard to interpret? She pulls down from her shelves a dog-eared copy of the journal in which the wiring was first described. The diagram shows the electrical connections that each of the 302 neurons makes to others in the system. These are the same kind of connections as those made by human neurons. But worms have another kind of connection.
Besides the synapses that mediate electrical signals, there are also so-called gap junctions that allow direct chemical communication between neurons. The wiring diagram for the gap junctions is quite different from that of the synapses.
Not only does the worm’s connectome, as Dr. Bargmann calls it, have two separate wiring diagrams superimposed on each other, but there is a third system that keeps rewiring the wiring diagrams. This is based on neuropeptides, hormonelike chemicals that are released by neurons to affect other neurons."
Humans are slowly making progress in understanding how C. Elegans works, see for example: Parallel Multimodal Circuits Control an Innate Foraging Behavior https://www.cell.com/neuron/fulltext/S0896-6273(19)30080-7
How to actually change your mind (book 2) is definitely a great section of Rationality: From AI to Zombies.
Is a printed six-volume set still being worked on?
I have used Lulu to print the book, instructions are at: https://github.com/jrincayc/rationality-ai-zombies Or you could print it somewhere else that allows you to print a 650 page 8.5 by 11 inch book. (If you try it with a different place, let me know) I have read through the entire printed version and fixed all the formatting issues that I found in the beta7 release in the new beta8 release.
I have used the two column version: https://github.com/jrincayc/rationality-ai-zombies/releases/download/beta3/rationality_from_ai_to_zombies_2c.pdf with https://www.lulu.com/ to make a printed version for myself.
(Update: beta3 has quite a few problems that have been fixed in newer versions, so grab a new release if you are printing it: https://github.com/jrincayc/rationality-ai-zombies/releases )
Note that there are problems with the that pdf, so it isn't perfect, but it might work. The regular PDF is too long to print as a single book.
I have relinked the footnotes. It is now reasonably editable. I've put up pdfs at https://github.com/jrincayc/rationality-ai-zombies/releases
There is still a lot of work to do before I consider it done, but it is more or less useable for some purposes. I printed off a copy for myself from Lulu for about $12. Here is the two column version that can be printed out as a single volume:
I have been creating a tex version at: https://github.com/jrincayc/rationality-ai-zombies