As Kuhn proposed, our propositions about the world are embedded within paradigms, roughly a network of interrelated commitments to a particular theory, a conception of a subject matter, and methodological practices. Thus, when scientists undertake research, they do so from within a specific paradigm. Even the most exacting measurements are only sensible from within that paradigm. For example, a look into a microscope tells you nothing unless you are already informed about the nature of the instrument and what you are supposed to be looking at. Thus, what we call major progress in science is not a movement from a less to a more accurate paradigm. Rather, it is a horizontal shift from one 'way of seeing the world' to another. For Kuhn, 'the scientist with a new paradigm sees differently from the way he had seen before.'