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Precautionary and Anti-Precautionary Heuristics. When harm is unbounded, never use a new technology if a more ancient one does the same function. When harm is bounded, never use a known technology if a newer one can do the same function.
(Background: I just had a run-in on twitter with C Venter who was trying to invoke GMOs (Vitamin rice) as the only alternative to children's blindness (or moral grounds) when one can give these kids, carrots or pills, instead. But then Monsanto and other labs would never benefit from these standard solutions...)
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