Just imagine a swarm of robots attacking you, each of them on your own, you could stop with two fingers, but a whole swarm, and you’re done. Well they aren’t quite attack robots, but they are small, less than an ounce in weight and under a quarter-inch cubed in volume.
Is it just me, or do those “treads” look like small rubber bands? Anyways, they are really small and only run off three really small watch batteries. And the whole swarming thing, yeah, that’s how they are supposed to work, but its to accomplish various tasks, not to eat you alive.
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