When, if ever, is it morally permissible to use genetic therapies?
*new & related* Chinese Scientists Edit Genes of Human Embryos, Raising Concerns - NYTimes.com
"With gene editing, the cutting and pasting has to
start immediately, in a fertilized egg, before it is possible to know if an
embryo has the Huntington’s gene. That means half the embryos that were edited
would have been normal — their DNA would have been forever altered for no
reason."
"Dr. Daley notes that when cloning techniques were
developed, there was an international consensus that it would be unacceptable
to clone a human being. Nonetheless, some researchers tried. He worries that
something similar will happen with gene editing."