system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: When we form scabs that do not heal properly and turn into scars, why can't we rip off that scar tissue and try again to let it heal correctly?
gpt
Okay, when a wound heals, it scabs over the top and heals from the bottom up. It fills in. Unfortunately the tissue it uses to fill in this deficit is fibrous and not very attractive. The larger the deficit, the more likely it will be to scar visibly. A scar IS a wound which has healed "correctly" and "properly".

If you mean to ask why we can't allow scars to heal more attractively, the answer is...we can. It is absolutely possible to surgically remove scar tissue from smaller wounds and align the now perfectly incised cuts up to allow them to heal with less of a visible scar. 

If it's a larger scar, this isn't possible because human skin is held to muscle by connective tissue, so it only has so much immediate give in it and larger wounds would not be able to be fully closed, leaving a deficit and leading to scarring again.