Mistakes are human... it is how we learn. Sometimes we learn something for the next reincarnation but usually we learn for this one...

There is a theory that nests and other techniques for protecting young (and, in the same vein schools) are all evolutionary tactics to allow young to make mistakes in a safe environment. In a nest, a young bird learns to interact with other birds, how to acquire food and so on. They make mistakes, they still get food (parents feed them) and they don't get eaten (parents protect them). In the open, a single mistake is deadly. Humans, with the longest 'nesting period' of any animal (up to and sometime beyond 18 years) not only have this protection but a whole host of other protections (hospitals, police, society in general) that support and prevent mistakes from being fatal...