While it seems that might be true of whatever the bottom level is, we're nowhere near that now. For instance, we know not just the how but why of Newtonian grav

While it seems that might be true of whatever the bottom level is, we're nowhere near that now. For instance, we know not just the how but why of Newtonian gravity; relavistic gravity! Of course, we have lots of unknowns about relavistic gravity, so on it goes.