I counter your example by proposing that we are headed for a world where my unborn children and grandchildren would be monitored and reevaluated until that conf

I counter your example by proposing that we are headed for a world where my unborn children and grandchildren would be monitored and reevaluated until that confidence level is as small as society will demand, and that treatment responses will not be limited to a simple extinguishing of life. It then becomes acceptable loss. I believe this is the key message that Sam Harris wanted to deliver is that technology will significantly swing the power of scientific methods in relevant moral debates.