I think some of that stuff is there, it&#x27;s just buried.  For instance, the first thing I thought of was Descartes, and his <i>Rules for the Direction of the Mind</i>, so I checked: it is listed [1], but there seems to be no discussion of it, and that page is the only mention of Descartes.<p>[1] on this page: <a href="http:&#x2F;&#x2F;www.ludism.org&#x2F;mentat&#x2F;BrainBooks" rel="nofollow">http:&#x2F;&#x2F;www.ludism.org&#x2F;mentat&#x2F;BrainBooks</a>