...Whoever invented the Pokeball, maybe. Maybe that same person invented TMs and HMs, too.

But, um, the native people here don't talk in-depth to us very much. They just repeat the same stuff over and over again.

[Thus it's not just Namine's tendency towards being shy that caused her to flub explaining it, it's just...very difficult to explain in the first place.]

So we can try to explain it as much as we want, but honestly it's a mystery that a lot of us have given up trying to crack.