> sure it was done entirely with POST and no business logic at all client side Even if you don't have business logic on the client side, you still have a state

> sure it was done entirely with POST and no business logic at all client side Even if you don't have business logic on the client side, you still have a state: tab position, state of controls, etc. These are not part of the data you really care to store on the server, and yet they have to be sent there at each and every page reload, as they might be needed in order to build the response.