Jack Dorsey: Square, Cryptocurrency, and Artificial Intelligence | Lex Fridman Podcast #91

Recorded just before the pandemic, this Lex Fridman conversation focuses on Square and broader philosophical topics rather than Twitter. Dorsey explains how Square reframed merchant risk from distrust to trust-then-verify, lifting credit-card approval from ~30-40% to 99% using data science and machine learning. He makes the case for Bitcoin as a native internet currency that could expand global economic access, especially in Africa. The talk ranges across AI explainability, the Turing test, job displacement and universal basic income, before turning to personal practices like once-a-day eating and intermittent fasting, mortality, and the meaning of life.

• Square took credit-card approval rates from ~30-40% industry norm to 99% by reframing risk at the transaction level instead of the merchant level.
  00:12:03
• Dorsey says Square's biggest problem is it can't act like a true internet company, and Bitcoin as a native internet currency could let them launch in every market at once.
  00:16:13
• Lex jokingly asks if Jack is Satoshi Nakamoto; Dorsey deflects without a clear denial.
  00:23:04
• Dorsey cites Harari's worry that algorithms like Google know our preferences better than we do, offloading our self-awareness.
  00:32:28
• Dorsey discusses eating only one meal a day and intermittent fasting, describing it as feeling like a superpower.
  00:41:29
• Dorsey says he thinks about death multiple times a day and uses it as a tool to clarify what matters.
  00:46:14

• Jack moved $1 billion of Square equity (28% of his wealth) to fund COVID-19 relief, posting all donations to a public Google Doc.
  00:00:30
• Dorsey describes himself as a hacker at heart rather than a legit software engineer.
  00:03:39
• Square shifted the financial industry's mindset from distrust to 'trust and then verify.'
  00:11:30
• Dorsey calls the Bitcoin white paper one of the most seminal computer-science works in 20-30 years and 'poetry.'
  00:17:47
• In Ethiopia, the local Uber/Lyft founder's biggest problem was simply paying riders and drivers, stunting growth.
  00:21:30
• Dorsey argues the chasm to general intelligence is the ability to explain the why and meaning behind a decision.
  00:26:43
• He warns the technology to create fakes is moving faster than the technology to detect them.
  00:30:21
• Dorsey got the one-meal-a-day idea from hearing Wim Hof on a podcast.
  00:43:33
• As a child Dorsey was so shy he needed a speech therapist, then joined a speech club to overcome it.
  00:44:39