Lenny Rachitsky: We had a whole podcast on evals with Hamel and Shreya. That's exactly what they talked about is just, it's actually really fun to create evals for companies, especially. So let's still dig into that one a little bit more. There's this kind of debate online that, I don't know how big of a deal this debate is, but it feels like people spend a lot of time thinking about this, this idea of, do we need evals for AI products? Some of the best companies say they don't really do evals, they just go on vibes. They're just like, "Is this working well? Can I feel it or not?" What's your take on just the importance of building evals and the skill of evals for AI apps, not the model companies?
Can I feel it or not?" What's your take on just the importance of building evals and the skill of evals for AI apps, not the model companies?