You couldn't have illustrated my point nicer. Yes it makes a sound. There will be vibrations in the air pressure propagating from the impact. If there are birds

You couldn't have illustrated my point nicer. Yes it makes a sound. There will be vibrations in the air pressure propagating from the impact. If there are birds around they might take a flight. The ground vibrations will create ripples in the nearby pond which might distract a dragonfly enough that a frog swallows it whole. I understand that I'm taking a Zen koan in the most literal sense, but this the best way I can illuminate the ludicrousness of it. We are not the centre of the everything. Things happen without us. Believing otherwise is as I wrote egoistical, self-centered. There is an unremarkable planet orbiting a regular star a thousand and two light year away from us. On that planet there is a somewhat deer-like species descendant from a prey animal. They are masters of mathematics, philosophy and technology. Their cognition is so advanced that they would only politely smile at the notion that "human consciousness" is the greatest mystery of all. One of them between two ritual playfights took a dust bath on the meadow. It was thinking about the atmosphere of gas giants, when he come up with a question. There is not even a point in trying to explain to humans what the question was. We don't have the capacity to comprehend it. That question was the greatest mystery of all. Pity that they all went extinct before coming to terms with their own inability to find their answer.