I explained to Wolf that if other people can't read it or if it is wrong because he rushed it and was sloppy (as opposed to not understanding etc...) then other people won't think that he understand the concepts. What that boils down to at our house since we do independent study is that he has to do more of the same work till he shows competence. It's not just about KNOWING how to do something with homework and schoolwork you have to SHOW THAT YOU KNOW and that means legible and no sloppy mistakes.

You can KNOW how to do brain surgery, but if you are sloppy about it and rush through it the results can be disasterous. Sort of an amusing analogy.