I was going to use this analogy in the exact opposite way. We do have a very good understanding of how the human brain works. Saying we don't understand how the brain works is like saying we don't understand how the weather works.

If you put a million monkeys on typewriters you would eventually get shakespeare is exactly why LLM's will succeed and why humans have succeeded. If this weren't the case why didn't humans 30000 years ago create spacecraft if we were endowed with the same natural "gift".