Originally Posted by Llama_Shepherd
I always wanted to know what Dent would have done if his coin came up the bad side on himself. Would he be like "Crap. Gordon, I need to blow my brains out now, so when I'm dead, will you flip my coin again and promise me if it comes up bad you'll kill your kid?"
I don't think he wanted to kill the boy. So, he rigged 'fair' to give the boy the best odds he could ... 25%. If his coin had come up black, he'd have shot himself and been done with it.