[dragontamer]

We talk to the piece of sand with lightning (USB Keyboard 5V interface), and then we hear its response back with lightning (HDMI Port interface). And somewhere in the middle, there's a source of lightning that's making it think on its own (Power supply and VRMs).

EDIT: More seriously though: https://www.youtube.com/watch?v=NGFhc8R_uO4

[lillecarl]

Video saved to watch later, thanks mate. Though I must say I like your first unedited answer too, so I'll put it back here.

> Its pretty simple. We zap sand with lightning until it starts thinking for us.

[dragontamer]

Lol, thanks.

I think I kept working the joke in my brain, and it was too brutally simple at first. And then I worked it over, and now it reads too complicated. Ah well.

I think I was overthinking the joke.