system
Given the following post, respond as if you're commenting on Reddit:
human
eli5 | I just saw an article with a video of a nanorobot helping a sperm to find it’s way to the egg. How the hell does that nanorobot works? How can those commands be inside a so-small chip? What about it’s very small battery? HOW?
gpt
It isn't anything like what you think it is. There are no tiny chips, no tiny battery, no tiny sensors or anything. It isn't a "bot" in any meaningful sense, that is just nonsense to feed the tech "journalism" interest.

Instead it is actually just a tiny piece of coiled metal. That is it, no moving parts. It is moved around by the whole thing, fluid, sperm, and metal coil, being placed inside a rotating magnetic field. By controlling the field they can make the coil spin, which moves it through the fluid like a propeller. They can steer it around to pick up immobile sperm and move it to a desired location.

But it isn't a "bot" any more than pushing a rock around with a stick makes the rock a "bot".