I agree with the principle of "extraordinary proof", but in practice, what qualifies as extraordinary is highly subjective. To a Creationist, spontaneous genera

I agree with the principle of "extraordinary proof", but in practice, what qualifies as extraordinary is highly subjective. To a Creationist, spontaneous generation of life is extraordinary. To a Truther, the buildings falling due to fire alone is extraordinary, etc. I prefer the idea that an extraordinary amount of certainty requires extraordinary proof. Skepticism should be the default position.