Watching YouTube celebrity ‘engineerguy’—aka Bill Hammack—explain the engineering behind a gadget is far more entertaining than college ever was. And this time even moreso because he breaks down the simple but clever design that allows a Nerf blaster to fire one dart at a time.

You probably don’t give much thought to how the Nerf blaster in your hand works while you fire away at annoyed co-workers, but take a few minutes to watch this video and you’ll have a better appreciation for what is actually quite a marvel of plastic engineering. And that’s just one of the most basic Nerf blasters he’s taken apart. Imagine the engineering that goes into something like this. [YouTube]


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