I fundamentally don't understand those comments. Like, I get that these guys might be - maybe even probably are! - snake oil salesmen, but what about brain dig

I fundamentally don't understand those comments. Like, I get that these guys might be - maybe even probably are! - snake oil salesmen, but what about brain digitization is actually impossible? There are certainly a fixed number of neurotransmitter types, a fixed number of channels, a fixed structure to a particular operating brain, and so on. Anything that exists can be reverse engineered and, in principle, rebuilt.