system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do bugs not always die when you flick them across the room, or smash them with your hand?

For instance, when there's an ant on your kitchen counter, and you flick it, it doesn't die. Why is that? If something that much bigger than a human hit it that hard and that fast throwing it hundreds of feet (ant traveling a foot would be like a human traveling a few hundred, if you scale it up) you'd probably break 90% of the bones in your body and die instantly. And when you smash an ant and it keeps running? WHY! Shouldn't that splatter it? If you put it to scale, that would definitely kill any human. Why are bugs so tough!
gpt
It's the same reason a small toy car is barely damaged when you drop it off a table, while a real car would be totally destroyed by a proportional drop. That reason is that mass doesn't scale in a one-to-one ratio with length, but in a one-to-one ratio with volume.

Take two cubes of the same density but different length. Cube A is 0.1m long and Cube B is 2m long. The volume of Cube A is 0.001m^3 whereas Cube B's volume is 8m^3. So while Cube B is only 20 times longer than Cube A, it's volume is 8000 times greater. If the two cubes are the same density that means Cube B's mass is 8000 times greater. That also means accelerating Cube B at the same rate as Cube A takes 8000 times more force. If the two Cubes are made of the same material, there is a chance that Cube B will break if it experiences 8000 times more force than Cube A.