1.0Scott H Younghttps://www.scotthyoung.com/blogrich600338<blockquote class="wp-embedded-content" data-secret="iLydgPu2Bk"><a href="https://www.scotthyoung.com/blog/2017/06/13/how-much-do-you-understand/">How Much Do You Really Understand?</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.scotthyoung.com/blog/2017/06/13/how-much-do-you-understand/embed/#?secret=iLydgPu2Bk" width="600" height="338" title="“How Much Do You Really Understand?” — Scott H Young" data-secret="iLydgPu2Bk" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /* <![CDATA[ */ /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://www.scotthyoung.com/blog/wp-includes/js/wp-embed.min.js /* ]]> */ </script> How do you know when you understand something? This is trickier than it seems. Explanations are recursive. recursive. Recursion is the algorithmic equivalent of Matryoshka dolls. The same process nested inside itself again and again. This may sound complicated, but we use recursive processes all the time. recursive processes all the time. Consider trying to […]https://www.scotthyoung.com/blog/wp-content/uploads/2015/12/BicycleTest.png