Why people raise their hand when they knock a door?

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Because you can knock a door with your hand down as well and it would be more convenient?

In: Physics

33 Answers

Anonymous 0 Comments

I knock on a closed door with my arm up, but if I am knocking on an office door that is cracked open and I’m knocking to alert the occupant that I’m in the doorway, I knock with my arm down with the knuckle of my middle finger

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