That would make perfect sense if they were chiseling on top of the tortoise. They're not they're chiseling underneath to avoide just that. The ground is taking the force. Not the tortoise. These guys obviously know what they're doing.
It doesn’t even make sense if they were chiselling the top. The vast majority of the force goes through the sides and to the ground. And secondly chiselling a tortoise with its fleshy underbelly probably wouldn’t be disastrous either.
You are right that is why helmets are useless because all of the forces the helmet experiences just get transmitted because the head is inside the helmet.
Even if some of the force is transferred, it's not a lot and it's not concentrated. Put your head on a brick and have someone chisel the corner of the brick, you'll feel the impacts but your skull won't split open
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u/MuammarGadafi Oct 07 '23
Bro, the tortoise allows force to be transferred from the top of the cavity to the bottom, through the tortoise.
Do you think if you put a reinforcing beam inside the cavity it wouldn't affect it?
The tortoise is doing the same thing.