The way how tools like knives work has been topic of various debates for some time, so theres a few thoughts i came up with lately on this subject. At this point its mainly concerns with knives and hatchets, altho other tools may be affected as well. Currently all tools have simply durability and portion of it is expended every time tool is used, regardless of how menial of a task it is. And at the same time complex tasks, like butchering a corpse of bear, have fairly minuscule impact