system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: can someone please explain why it takes so long from the point someone is sentenced to death row to the actual date of execution?
gpt
A death sentence is irreversible. So we go to extremes to make sure the person is really guilty. There have been actual cases of people who were discovered to be innocent after 15-20 years on death row. 

Which do you think is a bigger injustice: for a guilty person to sit in jail for decades instead of being promptly executed, or for an innocent person to be executed for something they didn't do?