What would be "Proper Jumpscares?"

[MyRedNeptune]

I see what you mean now, but I wouldn't have understood that from your original post.

I asked because I remembered that at the beginning of An Unexpected Arrival there is a cave-in event - maybe not an intentional jumpscare, but with the tension that was built up at the time and the sudden break in silence it acted as one. But I understand now that you were addressing something else.

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I thought about it for a moment, and decided that to come close to formulating what you want would require a lengthy prelude and setting up definitions, so it would probably take considerable time if you want to write it down in a precise and thorough manner.