#analogies make everything understandable. What’s fasctinating about how the Universe really works, is that a lot of these things that *look* different are really *the same things*. Are there subtle differences? Sure. But by the time you have to nitpick, you’re *way* more advanced than I’m gonna ever get. Thinking of them as exactly the same – #spring #capacitor #pressure #tank – even mathematically – works perfectly fine. Also, an #accumulator where a computer adds up numbers – is *also* spring / pressure tank. It just stores up numbers instead of electrons, or pressure or whatever.