The Fabric of Reality, Criteria, for Reality

The very existence of general explanatory theories implies that disparate objects and events are physically alike in some ways. The light reaching us from distant galaxies is, after all, only light, but it looks to us like galaxies. Reality contains not only evidence, but also the means, such as our minds and our artifacts, of understanding it. This is self-similarity. And I want to note here, just at the end there, that powerful way of ending, echoes what is said by David in one of his TED talks,. when he talks about this kind ofself-similarity."