As I'm sure most of you know Murray Carter suggests NOT using any sort of lapping or flattening stone. If you don't know what I'm talking about, here's his explaination of his technique: http://www.youtube.com/watch?v=cqOc75YhuBQ
His approach makes a lot of sense to me. However, I notice that most everyone else suggests flattening. Any thoughts? I tend to do what Carter suggests but I'm always open to being educated!