Or often: 6 months you realize how hard/expensive it is to correct even if it is wrong.
Or: you realise that it was the pet project of someone who is now in charge and no matter how wrong/broken/costly it is, there will never be political will to allow change until they're gone.
Or: you realise that it was the pet project of someone who is now in charge and no matter how wrong/broken/costly it is, there will never be political will to allow change until they're gone.