system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why don't flies seriously fuck themselves up when they fly head-first into a wall or window?
gpt
Mainly because of their size. The weight of an object depends on its volume, and its strength depends on its footprint or cross-section.


If you halve the size of a body, it will have 25% of the original footprint or cross-section, but just 12.5% of the original weight. Halve it again and it'll have 6.25% of the original footprint, but just 1.5625% of the orignal weight.


Because there's so much stregth and so little weight, you would need a very high speed impact to kill a small animal like an insect, but an elephant would break its bones if it fell from even a moderate height. Basically, the smaller an object, the stronger it is.