Talk:Earthbending/@comment-24.59.62.208-20120514043359/@comment-112.209.234.32-20120630152709

no one can learn all the elements UNLESS he/she is the avatar.

Why not? thats just how the universe of the series work.

He mastered all the elements because he trained for it.

Airbenders are only supposed to bend air... but Aang is an exception because he is the AVATAR

CONCLUSION:

Aang can bend all elements because he is THE AVATAR.. everyone else cant because they ARE NOT avatars. There can only be one Avatar at a time.