[AnthonyMouse]

Not only that, the precautionary principle applies equally to inaction.

Should we research nuclear physics? The worst that could happen is global thermonuclear war, so forget about it. But what's the worst that could happen if we don't? We might need a nuke to divert an asteroid. We might need nuclear power to prevent climate collapse. It could save the world rather than destroy it.

"What you don't know can't hurt you" is contrary to evidence.