[Avodah] Adam HaRishon

[Cantor Wolberg]

R' Micha wrote:
"Adam could simply have been misled because he didn't know
what a lie was -- the possibility never crossed his mind. Naivite,
not ignorance or moral failing."

So if that were the case, then how can naivite be a sin?
Also, regarding his wanting a moral choice, that is similar to
what I remember some d'rash which pointed out that man needed
a choice and that eating from the eitz hada'as was necessary. That
explanation is really not satisfying.