In theory. In practice, when you need to shake it more often than once per page, it becomes unusable. In physical universe, once you need to shake it more than

In theory. In practice, when you need to shake it more often than once per page, it becomes unusable. In physical universe, once you need to shake it more than once per scanline (perhaphs 1/600inch), you start losing resolution (classical version of Heisenberg uncertainty principle).