Why does your body heal from significant injury with scar tissue instead of traditional skin? /u/CatBudda No such thing as stupid questions

Does it have a survival advantage? Is it just a functionless quirk that we happen to have? Is scar tissue any physically or biologically different from basic skin?

Does it have a survival advantage? Is it just a functionless quirk that we happen to have? Is scar tissue any physically or biologically different from basic skin?