It would have been nice to list the source of these lectures where they are freely available rather than a pirated Youtube link:<p><a href="https:&#x2F;&#x2F;www.simonsfoundation.org&#x2F;science_lives_video&#x2F;professor-john-w-milnor&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.simonsfoundation.org&#x2F;science_lives_video&#x2F;profess...</a><p>Published sequel here:
<a href="http:&#x2F;&#x2F;www.ams.org&#x2F;notices&#x2F;201106&#x2F;rtx110600804p.pdf" rel="nofollow">http:&#x2F;&#x2F;www.ams.org&#x2F;notices&#x2F;201106&#x2F;rtx110600804p.pdf</a>