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inhumanity seems to underpin humanity.

Yeah of course that's true, like I usually say there is no perfect human, you can be easily hurt by people you know. like my mum ussually say it's the rat inside the house that can call another from outside, this world is full of surprises.

People have strengths and flaws and some conditions will trigger poor behavior - it could be that the same conditions experienced by another brings out positives.

Yeah, course everything in life is two face; positive and negative effects.