Comment by inglor_cz

I don't think it is weasel word. It is just a qualification.

Nobody really expects AI to save terminal cancer patients or 90-y.o. cardiacs. Unexpected deaths, on the other hand, are really nasty, both for the next of kin and the doctors themselves. If an apparently viable patient suddenly drops dead, everyone asks what went wrong.

Reducing such deaths by one fourth is a good job.