"For the first time," reports the Washington Post, "an experimental treatment made from human embryonic stem cells has shown hints of helping someone, apparently restoring some vision for at least one and possibly two women losing their sight to incurable forms of progressive blindness."
And it only took how long? Adult stem cells have been helping people for years now.
One of the women refers to her restored vision as "a great gift." But that gift came at the cost of a life. I've never been partially blind and can't speak to what her experience has been like, but I would rather go blind than force an innocent human being to pay that kind of price for my eyesight.