Things like a rainbow across sudden rainfall in sunshine (the devil is beating his wife), autumnal leaf coloration of trees, holometabolism of insects, etc, are big changes from their usual states and are surprising in the absence of scientific considerations and explanations.
このような概念には、天気雨にかかる虹（狐の嫁入り）や、自然の木々の紅葉や、昆虫の完全変態などは、本来の状態から大きく変化することであり、科学的な考察や説明がなければ驚きであろう。