Eric Ries created the Lean Startup methodology and authored the bestselling book of the same name, which has sold over a million copies. He's also the founder and executive chairman of the Long-Term Stock Exchange, the co-founder of Answer AI (an AI R&D lab), and the author of the upcoming book Incorruptible, releasing May 26th.

In this episode of Summation, Eric and Auren discuss:

• why "bad governance" companies have outperformed "good governance" since 2008
• financial gravity - the invisible force that bends companies away from their mission
• the foundation-controlled blueprint behind Novo Nordisk, IKEA, and Zeiss
• why vibe coding is headed for its Chernobyl moment

You can find Auren Hoffman on X at @auren and Eric Ries on X at @ericries

Karl-Theodor zu Guttenberg became Germany's youngest Minister of Defense in history, and previously served as Minister of Economics and Technology. He is the chairman and founder of Spitzberg Partners, an investment and advisory firm, a bestselling author, and co-founder of Open Minds Media, where he produces films and podcasts. He co-hosts one of Germany's most popular podcasts.

In this episode of Summation, KT and Auren discuss:

• Why Germany's defense spending hovered at 1% of GDP for decades and what finally forced a change
• The nuclear exit decision that was driven by a single state election and backfired spectacularly
• How Rheinmetall surpassed Volkswagen in market cap and what it signals about Europe's industrial reorientation
• Why Germany's total stock market cap is less than a single US company like Nvidia

You can find Auren Hoffman on X at @auren and Karl-Theodor zu Guttenberg on Linkedin. 

Pat Gelsinger is the former CEO of Intel and longtime Silicon Valley leader.  He joins Auren to unpack the forces reshaping technology, geopolitics and leadership.

After more than 30 years at Intel (including serving as its first CTO) and nearly a decade as CEO of VMware, Pat now sits at the intersection of deep tech and purpose-driven innovation as executive chair and head of technology at Gloo and general partner at Playground Global.

In this episode of Summation, Pat and Auren discuss:

• Why the US now imports more from Taiwan than from China -- and what that means for national security
• The case for a U.S. sovereign wealth fund to counter China’s tech investments in semiconductors, energy, and rare earth minerals
• What happened when Intel gave $70B back to shareholders instead of building fabs, and why tech companies need technologist CEOs
• Andy Grove's 35-year mentoring relationship with Pat, starting with a cold call that changed his career

You can find Auren Hoffman on X at @auren and Pat Gelsinger on X at @PGelsinger

Vlad Tenev (Robinhood co-founder/CEO) and Tudor Achim (former helm.ai CTO) are the founders of Harmonic, an AI lab pioneering the path toward mathematical superintelligence. Together, they developed Aristotle, a model that eliminates hallucinations by reasoning in Lean code rather than natural language. By shifting from probabilistic guesses to formal logic, Aristotle produces 100% verified mathematical outputs. The model recently demonstrated its breakthrough capabilities by achieving gold-medal performance at the International Math Olympiad. 

In this episode of Summation, Vlad, Tudor, and Auren discuss:

• Why AI models struggled at math for so long 
• How Aristotle helped 10x the total corpus of formally verified Erdos problems in just a few months 
• Why formal verification will make all software dramatically safer
• How the first Millennium Prize problem will be solved by 2027-2028

You can find Auren Hoffman on X at @auren, Vlad Tenev on X at @vladtenev, and Tudor Achim on X at @tachim

John Allen is a retired four-star Marine Corps general who commanded 150,000 US and NATO troops in Afghanistan and built a 65-nation coalition as Special Presidential Envoy to the Global Coalition Against ISIS. After retiring from the military, he led the Brookings Institution as its president. He co-invented the term "hyperwar," holds five AI patents, and co-authored Turning Point: Policymaking in the Era of Artificial Intelligence. He currently serves as a strategic advisor to Microsoft.

In this episode of Summation, John and Auren discuss:

• Why Ukraine's battlefield is accelerating the autonomous weapons timeline faster than any defense department predicted
• The single assumption that doomed Afghanistan and why 2,500 troops could have changed everything
• What nobody is asking about the US operation in Iran 
• How China's one-child military could be the most underappreciated deterrent against a Taiwan invasion

You can find Auren Hoffman on X at @auren and John R. Allen on LinkedIn

Adrian Aoun helped found Torch, a health data platform that was acquired by OpenAI earlier this year. He's also the co-founder of Seneca, which raised $60 million to build autonomous drones for wildfire suppression. Adrian previously founded Forward Health. He previously led special projects for Larry Page at Google, where he founded Sidewalk Labs and helped build Google's AI division.

In this episode of Summation, Adrian and Auren discuss:

• Why curing all cancer adds only ~3 years of life but internet access for a billion people is massively more impactful
• How AI is turning healthcare from a service into a product -- and why the AMA is the new taxi medallion lobby
• The expert investor paradox: why deep expertise makes you a worse angel investor
• Why GLP-1s are the closest thing to a miracle drug in our lifetime

You can find Auren Hoffman on X at @auren and Adrian Aoun on X at @adrianaoun

Tod Sacerdoti is the CEO and co-founder of Pipedream, which recently sold to Workday. Tod is also a general partner at Flex Capital, where he's invested in over 400 companies including Chime, Vercel, Replit, CodeRabbit, Mercury, and many others. He previously founded BrightRoll, a programmatic video advertising platform that sold to Yahoo for $640 million in 2014. 

In this episode of Summation, Tod and Auren discuss:

• Why seed investing has the highest annualized returns of any venture asset class
• First-gen AI companies being the most vulnerable to AI disruption
• QSBS and why it's the most important tax benefit nobody talks about
• The founder code and what happens when people break it

You can find Auren Hoffman on X at @auren and Tod Sacerdoti on X at @tod

Nirav Tolia is the co-founder and CEO of Nextdoor (NYSE: NXDR), the neighborhood social network with over 105 million users across 350,000 communities worldwide. After stepping down as CEO in 2018, he returned to lead the company in 2024.

In this episode of Summation, Nirav and Auren discuss:

• Why success kills innovation
• The death of physical community
• Why Nextdoor had to change their stock ticker
• Insider vs Outsider entrepreneurs

You can find Auren Hoffman on X at @auren and Nirav Tolia on X at @niravtolia.

Lieutenant General Mike Fenzel recently retired as a three-star Army General. He most recently served as the United States Security Coordinator for Israel and the Palestinian Authority, navigating one of the world’s most complex geopolitical landscapes. His career is defined by high-stakes leadership, ranging from the immediate aftermath of the September 11th attacks, where he was stationed in the bunker alongside Vice President Dick Cheney, to multiple deployments to Afghanistan, to commanding an airborne brigade of 5,500 paratroopers. Beyond the battlefield, Fenzel is a scholar of strategic decision-making. His book, No Miracles, analyzes the internal Soviet failures during their occupation of Afghanistan.

In this episode of Summation, Mike and Auren discuss:

• Why the Soviets took four years to exit Afghanistan
• Lessons from leading security cooperation in Jerusalem
• Israel's dominance in security tech
• Why US foreign policy experts keep failing

You can find Auren Hoffman on X at @auren and Mike Fenzel on LinkedIn.

Martin Shkreli is the co-founder of DL Software, the parent company of Godel Terminal, a Bloomberg competitor for financial data. He previously founded the biotech companies Retrophin and Turing Pharmaceuticals and the hedge fund MSMB Capital Management. 

In this episode of Summation, Martin and Auren discuss:

• The structural reasons fintech is less competitive than other industries
• How drug discovery actually works (and doing it from prison)
• Why AI labs are now out-recruiting hedge funds
• What Martin learned from being "the most hated man in America"

You can find Auren Hoffman on X at @auren and Martin Shkreli on X at @MartinShkreli