We know more than we can tell (opens in new tab)

We are being sold LLMs as incredible productivity tools, and the more I hear that pitch the more I think about Michael Polanyi. He had a simple line: we know more than we can tell. He called the gap tacit knowledge. It is the stuff we pick up from experience and internalize without noticing, so we can't really explain it. How to ride a bike. When a deal feels off. Which of two correct looking designs is the one that quietly rots in six months.