 In rough outline, the first version involves defending say Dretske’s or Nozick’s tracking analysis of knowledge, then showing that it undermines K (versions of the tracking account are also defended by Becker 2009, by Murphy and Black 2007, and by Roush 2005, the last of whom modifies the tracking account so as to preserve closure; for criticisms of Rouse see Brueckner 2012). We can skip the defense, which consists largely in showing that tracking does a better job than competitors in dealing with our epistemic intuitions about cases of purported knowledge. We may also simplify the analyses. According to Nozick, to know p is, very roughly (and ignoring his thoroughly discredited fourth condition for knowledge, criticized, e.g, in Luper 1984 and 2009 and in Kripke 2011), to have a belief p which meets the following condition (‘BT’ for belief tracking):