@nprofile1q... @nprofile1q... Reminds me of Jules Verne books, where things like electricity (20 000 leagues under the sea) and space exploration were both pretty much science-fiction at the time.

And well I'd quite do the difference between demonstrating it and explaining it.
And like I'd even say that most people don't really know about current (hence the mantra of "don't plug everything on the same wallsocket" instead of doing the math) and voltage at best it's just to match with adapters.