You've still got the problem of addressing praise, because quite often you've only, if you've given somebody a specific task then it's easy to praise or not to praise in that situation, but if they've just come in, done their job and gone home, you know, just sat on a checkout for four hours, right it's my time to leave, then, if they've done nothing out of the blue, extraordinary, so they don't do anything wrong, or, you know.