Which thinkers did you have in mind?<p>The Mentat Wiki has entries on mnemonic techniques like the Major System[1], Peg System[2], and the Loci System (aka Memory Palace)[3], which are hundreds if not thousands of years old.<p>It&#x27;s not really fair to characterize the wiki as being all about &quot;drugs and video games&quot;.<p>[1] - <a href="http:&#x2F;&#x2F;www.ludism.org&#x2F;mentat&#x2F;MajorSystem" rel="nofollow">http:&#x2F;&#x2F;www.ludism.org&#x2F;mentat&#x2F;MajorSystem</a><p>[2] - <a href="http:&#x2F;&#x2F;www.ludism.org&#x2F;mentat&#x2F;PegSystem" rel="nofollow">http:&#x2F;&#x2F;www.ludism.org&#x2F;mentat&#x2F;PegSystem</a><p>[3] - <a href="http:&#x2F;&#x2F;www.ludism.org&#x2F;mentat&#x2F;LociSystem" rel="nofollow">http:&#x2F;&#x2F;www.ludism.org&#x2F;mentat&#x2F;LociSystem</a>