John Arnold built his fortune in energy trading by surrounding himself with smart people, maintaining emotional detachment, sensing market imbalances through first-principles analysis, and focusing with laser intensity on a single niche until he dominated it completely. Now he's applying that same analytical rigor to philanthropy, where he's discovered that changing human behavior for the long term proves far more challenging than predicting natural gas prices, and that the academic research meant to guide social policy is often riddled with perverse incentives and poor methodology. Tyler and John discuss his shift from trading to philanthropy and more, including the specific traits that separate great traders from good ones, the tradeoffs of following an "inch wide, mile deep" trading philosophy, why he attended Vanderbilt, the talent culture at Enron, the growth in solar, the problem with Mexico’s energy system, where Canada’s energy exports will go, the hurdles to next-gen nuclear, how to fix America’s tripartite energy grid, how we’ll power new data centers, what’s best about living in Houston, his approach to collecting art, why trading’s easier than philanthropy, how he’d fix tax the US tax code and primary system, and what Arnold Ventures is focusing on next. Read a <a href= "https://conversationswithtyler.com/episodes/john-arnold/">full transcript</a> enhanced with helpful links, or watch the <a href="https://youtu.be/rml8ZaP8XpQ">full video</a>. Recorded April 28th, 2025. Help keep the show ad free by <a href= "https://mercatus.donorsupport.co/page/podcastgift?utm_source=cwt+podcast&utm_medium=podcast&utm_campaign=shownotes"> donating</a> today! Other ways to connect <ul> <li class="p1" style= "font-size: 12pt; font-family: arial, helvetica, sans-serif;"> Follow us on <a href= "https://twitter.com/cowenconvos">X</a> and <a href= "https://www.instagram.com/cowenconvos/?hl=en">Instagram</a></li> <li class="p1" style= "font-size: 12pt; font-family: arial, helvetica, sans-serif;"> Follow <a href="https://twitter.com/tylercowen">Tyler</a> on X</li> <li class="p1" style= "font-size: 12pt; font-family: arial, helvetica, sans-serif;"> Follow <a href="https://x.com/JohnArnoldFndtn">John</a> on X</li> <li style= "font-size: 12pt; font-family: arial, helvetica, sans-serif;"> <a class="c-link" href="https://mercatus.tfaforms.net/5060931" target="_blank" rel= "noopener" data-stringify-link="https://www.tfaforms.com/5060931" data-sk="tooltip_parent">Sign up for our newsletter</a></li> <li style= "font-size: 12pt; font-family: arial, helvetica, sans-serif;"> Join our <a href= "https://discord.gg/JAVWP7vTxt">Discord</a></li> <li class="p1" style= "font-size: 12pt; font-family: arial, helvetica, sans-serif;"> Email us: <a class="c-link" tabindex="-1" href= "mailto:cowenconvos@mercatus.gmu.edu" target="_blank" rel= "noopener noreferrer" data-stringify-link= "mailto:cowenconvos@mercatus.gmu.edu" data-sk="tooltip_parent" aria-haspopup="menu" aria-expanded="false" data-remove-tab-index= "true">cowenconvos@mercatus.gmu.edu</a></li> <li class="p1" style= "font-size: 12pt; font-family: arial, helvetica, sans-serif;"> Learn more about Conversations with Tyler and other Mercatus Center podcasts <a href= "https://www.mercatus.org/podcasts">here</a>.</li> </ul>

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