That's true of so many things isn't? At my graduation (EE as well as CS, is why it's relevant) I said to my dad that I'm still completely baffled by the simplest AM radio, forget WiFi.

I understand it (especially then), but it's just crazy isn't it, that it actually works? Discovering/theorising and then prototyping some of this fundamental stuff and seeing that for the first time must have been absolutely incredible.