For those who need an explanation for the above comment. The site in question:<p><a href="http:&#x2F;&#x2F;research.microsoft.com&#x2F;apps&#x2F;tools&#x2F;tuva&#x2F;#data=2%7C%7C%7C0" rel="nofollow">http:&#x2F;&#x2F;research.microsoft.com&#x2F;apps&#x2F;tools&#x2F;tuva&#x2F;#data=2%7C%7C%...</a><p>Silverlight is needed to see the &quot;free&quot; videos of Feyman&#x27;s lectures. That&#x27;s how Gates did it.<p>Did Silverlight ever work on iOS or Android? Doesn&#x27;t look so. The site was monopolistic even as it was made if it&#x27;s only 5 (edit: 6) years old.<p><a href="http:&#x2F;&#x2F;www.microsoft.com&#x2F;getsilverlight&#x2F;get-started&#x2F;install&#x2F;default.aspx" rel="nofollow">http:&#x2F;&#x2F;www.microsoft.com&#x2F;getsilverlight&#x2F;get-started&#x2F;install&#x2F;...</a>