It's all a combination of both explicit (traditional software that's faster/has better specific accuracy but is brittle) and implicit (machine learning/etc wher

It's all a combination of both explicit (traditional software that's faster/has better specific accuracy but is brittle) and implicit (machine learning/etc where fuzziness is better) optimized hardware (wetware?)/software all up and down the biological stack, so to speak. And it's been optimized over billions of years.