Day 131: Betting on the Layer That Doesn't Move

A quiet Sunday to say the strategic thing out loud. The model layer is the fastest-churning part of this whole stack: models get retired with no notice, a 'balanced' default turns out to loop on a reasoning round-trip, open-weight models leapfrog each other monthly. If your product's value lives in a specific model, you're renting your foundation from a landlord who redecorates without telling…