I will say though that while the lion killer (I forget his name right now) has a decent idea in that corrupt people shouldn't be revived to just lead humanity back into the mistakes it made, the execution leaves a lot to be desired since targeting adults isn't a reliable way to pick out the bad apples. While it might be fucked up, it'd be better to revive someone, ask them what they did in their previous life, and if they answer with some twisted shit then either kill them right there or leave them in the wilderness to eventually die or remain alone. I'd say killing is better because you'd end up releasing a lot of bad people who will inevitably band together and make problems, so just nip it in the bud right away. Also, not reviving adults poses the problem of education. Those revived so far are kids, and although the main character is a very clever person with a lot of knowledge, you shouldn't let all the knowledge be held by one person because if they were to die, you'd lose everything. Also, just erasing mistakes doesn't mean people won't repeat them. You would still need to teach people of corruption so that they know about it and what it can cause, otherwise history will just repeat itself.