looking on by an outsider
傍見にはよく分かる。
From an outsider's perspective, it's easy to understand.
傍見だと間違いがはっきり見える。
From an outsider's perspective, mistakes are clearly visible.
当事者には見えなかったが、傍見には全て明らかだった。
It was invisible to those involved, but everything was clear to an outsider.