[Appenianags]

I think your questions have narrowed the scope a little too much. Technology is advancing in the field of forensics, and as it is progressing, we are likely to see less and less innocent people on death row. If these scientific methods provide substantial information to convict a criminal, then they provide substantial information to justify death.

Then think of the question as a hypothetical excercise. There is no better framework for practical application than the hypothetical ('use-cases' if you will... )