I'm confused about what "mistakes" you are referring to.
Society is imperfect because it is established and maintained by man. Nature is perfect.
Mistakes like accidents, a field full of animals and people and it gets covered in volcano stuff in 2 seconds ..... those sort of mistakes.
Mistakes meaning the heart break of the world is shit ...... these kind of mistakes.
Not mistakes as such, but you have to think what they are then? accidents.
So god created a world full of accidents.
Whales get beached, you can think 'fuck that, i'm much more superior to let it bother me'
the list goes on.
Its difficult to understand why it is like it is.