When I was about 12, a friend and I were at a historical site with one of those machines with a phone handset you pick up and it tells you about the site. I picked up the handset, changed the language selector, got an electric shock, dropped the handset.

Then I repeated the experiment.

Did the selected language matter?
Did you need to be holding the handset?
Did it need to be off-hook?

I called my friend over to show him this neat discovery I’d made.

His only question: “why do you keep touching it?”


Anyway, I don’t recall having seen this xkcd before. Probably unrelated.


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