Embryo selection is the easiest way to minimize the risk of miscarriage.

The only reason why you would say that there is no way to prevent them is that I infer from your posts that you are most likely against embryo selection.

The comment I was responding to suggested eliminating miscarriage as a policy objective. I said that was impossible. Your response with a suggestion to minimize risk while increasing the amount of total human death does not address the point, regardless of my comment history (ad hom.?).

"Does God have the ability to prevent miscarriages, but will not? Then why call him God?"

Or something like that... can't remember how it goes exactly.

Where do you get this expectation that biological processes should have a zero percent failure rate?