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It can happen both ways.

Hmm
Some people already have the trait ?

Certainly. Have you never seen a child that just enjoys stealing and hitting?

whaoo, it is well

I believe we are all born innocent.

Really 😞
Well this feel true

Circumstances or an occurrence of an event can make people to be wicked without their knowing, they tend to see it as a way of life or a way of escape.

So
In your perspective people are taught to be wicked

I wouldn't say taught but decided.