Meaning of もともと in Japanese

Definition of もともと

もともと(motomoto) 【元々 ·本々 ·元元 ·本本】

(adv, adj-no) originally; by nature; from the start
彼らは元々あった文明を破壊した。
They destroyed the native civilization.

だめでもともと(damedemotomoto) · ダメでもともと(damedemotomoto) 【駄目で元々 ·ダメで元々】

(exp) giving something a try because one has nothing to lose →Related words: 駄目元

"You'll get your clothes dirty." "No worries. They weren't very clean in the first place."

They were the native New Zealanders before the Western people came.

彼らかれらはもともと農業のうぎょうをやっていました。

Originally they were farmers.

彼かれは自分じぶんのもともとの計画けいかくを成し遂げるなしとげることに固執したする。

He persisted in accomplishing his original plan.

彼かれは自分じぶんのもともとの計画けいかくをなし遂げるとげることに固執したする。

He persisted in accomplishing his original plan.

I hope to make clear why I think Emmet's theory, originally introduced in the field of design architecture, is so important in physics.