Talk:Amon/@comment-121.213.21.232-20120422045518/@comment-24.154.218.10-20120422052129

I think the ability to bend an element is like a gene, as in you inheirt it from your parents. If anyone could learn from one of the originators (Badgermoles, Moon/Ocean spirits/Sky Bison/Dragons) then we might have had people who could bend more than one element, or had Fire Nation citizens personating as Earth and Water benders in the first series. Sort of defeats the perpouse of having an Avatar to keep the balance between the groups.

I think Toph had the ability to bend in her family, but skipped a generation or two, similar to how Katara is the only known bender in her family.