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It helps to be extremely lightweight and small - the smaller you get, the less effort you need to put into just staying aloft.


The smaller you are, the less energy you can store.

Efficiency is a maximization of these ratios.


What happens when we start making drones that small, I wonder.


It's called smart dust. Check Sci-Fi bookshelves.


“Flies Aren’t Real”


Haven’t you noticed fewer birds than you saw when you were younger?


Not to mention they're much more influenced by wind currents.




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