{"version":"1.0","provider_name":"Experimental Frontiers, with Josh Mitteldorf","provider_url":"https:\/\/scienceblog.com\/experimentalfrontiers","author_name":"Josh Mitteldorf","author_url":"https:\/\/scienceblog.com\/experimentalfrontiers\/author\/joshmitteldorf\/","title":"Darwin, Lamarck, and McFadden","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"f9PenkJ6by\"><a href=\"https:\/\/scienceblog.com\/experimentalfrontiers\/2025\/07\/20\/darwin-lamarck-and-mcfadden\/\">Darwin, Lamarck, and McFadden<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/scienceblog.com\/experimentalfrontiers\/2025\/07\/20\/darwin-lamarck-and-mcfadden\/embed\/#?secret=f9PenkJ6by\" width=\"600\" height=\"338\" title=\"&#8220;Darwin, Lamarck, and McFadden&#8221; &#8212; Experimental Frontiers, with Josh Mitteldorf\" data-secret=\"f9PenkJ6by\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!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);\n\/\/# sourceURL=https:\/\/scienceblog.com\/experimentalfrontiers\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","thumbnail_url":"https:\/\/scienceblog.com\/experimentalfrontiers\/wp-content\/uploads\/sites\/7\/2025\/07\/giraffes.webp","thumbnail_width":390,"thumbnail_height":130,"description":"Here are three ideas of how evolution works, which I\u2019ll refer to as Darwinian, Lamarckian, and super-Lamarckian. Darwinian:\u00a0Offspring are just like their parents except for mistakes and DNA copying errors \u2014 mutations that are completely random, caused, for example, by stray cosmic rays. All the functionality that evolves is due to natural selection \u2014 i.e., ... Read more"}