Adhering to this, would make experimentation difficult in many fields. I am not a fan. Taking action, even if there's no evidence, in the service of the preserv

Adhering to this, would make experimentation difficult in many fields. I am not a fan. Taking action, even if there's no evidence, in the service of the preservation of life is moral. It may not be effective (or net positive effect), but the place of sacrifice is a different moral question.