system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 why our skin and liver, the largest organs in our body, regenerate but other organs can't?
gpt
All organs will regenerate to a degree. The more complex the organ, the more likely it is to repair incorrectly, resulting in scaring.

The heart is a bit of an exception, as it has specialized so far towards ensuring critical functioning that it has very little of the normal repair mechanisms remaining.

Along the same vein as the heart, organs that are more likely to be damaged generally have better repair mechanisms. This means the skin is typically a lot better at repairing itself than other organs, and that is helped by the fact that the outer layers of your skin are actually already basically dead.