Okay, waiting for the grand finale. I hope they make another series though.
So I have a crazy idea about what may be a concern in book 4. I can’t be sure they’ll go this way, but i’m gonna call it anyway: A NUCLEAR DANGER.
Here’s what I mean by that. I suppose everybody remembers the time Iroh was explaining basic principles of the elements and lightning generation to Zuko. He states, that lightning is created by separating positive and negative energies. This makes sense - electricity is created by electrones, the negative particles of an atom, being separated from the nucleus, comprised of positive and neutral particles. This can be the key to both nuclear power (nucleus separation) and solution to a major avatar problem - living with the spirits.
But what bending would be able to deliver nuclear strikes? You’d think that separation of an atom as a whole would only be available for the Avatar, buut… It is enough to have an element with great atomic mass: something like Uranium or Plutonium (which are used in real-life’s nuclear energy). And guess what - they’re metals.
This, if somebody doesn’t know, calls back to leaked footage and Kuvira, definitely an important character in the future, being the main suspect for a villain. That would make her a legit threat, but why would writers go that route? This goes back to the whole separating energies talk.
Iroh calls it energy, while it’s solid matter - atomic particles. Contradiction? Not at all, since, as we know, mass and energy are essentially the same, at least according to Einstein’s theory of relativity, which, guess what, ultimately led to development of nuclear physics.
This is debatable, but I assume that spirits are a form of energy, which means that they and humans, as well as other living things, are also the same. How exactly would the realisation come through - I got nothing, but a connection to nuclear danger is definitely there.
This theory is not at all solid and lacks solid proof, but I say it’s a possibility. What do you think?