[TheCoelacanth]

> If someone knocked on your door, quite unexpectedly, in the middle of the night, can I err on the idea that you would be quite panic-struck?

Quite likely, but only because the socially acceptable reasons to knock on someone's door in the middle of the night are usually something pretty bad. I wouldn't fear that they're attacking me. I would fear whatever they are waking me up to tell me about.