facts I've observed about how my brain stores knowledge

I’m writing these things down over time because I’d like to figure out how to make artificial neural networks better at storing and retrieving knowledge, and the human brain is pretty good at that. When knowledge is new, it sometimes only comes back to me when I’m in the right context. For example, right now I can only think vaguely of how to adjust a chain derailleur on a bike, but I know that if I walked up to my bike and looked closely at the derailleur some more knowledge would appear.
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notes about neuroscience

How much of brain structure is coded for in the genome? For example, the hippocampus is generally thought to be responsible for consolidating long-term memories. Is the specialization of this region an epigenetic phenomenon due to optimization in the environment, or is it coded more directly? Will we eventually see these structures emerge in artificial networks with sufficient scale and good optimization, or will we need to code it more directly?
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