I’m not able to read billions of books in less than an hour.
I think you underestimate the sheer volume of data + conclusions the brain ingests and processes on a daily basis, primarily through unconscious experience.
The training set for GPT-3 is about 500e9 tokens; any given synapse in a human in their lifetime is going to fire about 2e9s * (10% * {100Hz to 1000Hz}) = 20e9 to 200e9 times.
I think you underestimate the sheer volume of data + conclusions the brain ingests and processes on a daily basis, primarily through unconscious experience.