A rather different response shrugs off the need for any kind of ‘foundations’, whether certified by reason, as Descartes hoped, or merely natural, as in Hume. This approach goes back to emphasizing instead the coherent structure of our everyday system of beliefs: the way they hang together, whereas the sporadic experiences or beliefs we get in dreams are fragmentary and incoherent. It then points out an interesting feature of coherent structures, namely that they do not need foundations.
