if someone fixes haemofeelia and passes it on. i find myself thinking maybe i will not draw the line to rule out the therapeutic effort out. we talk about this as a 3-parent baby i don't think it has much moral force behind it. a lot of people have more than two parents around. we have egg donations, sperm donation embryo don't i suggests. in high school i had a clunker of a car and let a buddy strip it for ports, and he took out different parts. i didn't think it gave me ownership over his car, i don'tated the parts. i'm not sure that that moniker is one that should scare us. it scarce some. >> what do you think about that marcy, that we are making too much of a third parent, and it's not that big a factor. >> i don't like that phrase either. concerns are around two sets of things - safety that we have talked about, and the mission creep, the slippery slope pt the line that has been drawn is bright technically and in policy terms. weighing against that the real desires of people to have children that don't have this particular ki