AI happenings and takes - December 2025
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Create an accountAI happenings and takes - December 2025
Miscellaneous
How to make a Christmas song (check out the last minute of the below CBS Sunday Morning segment for an attempt at a new Christmas song that follows all the patterns)
Memorable Quotes from 2025 Guests on Shane Parrish’s The Knowledge Project
Harley Finkelstein (President of Shopify)
Bret Taylor (founder of Sierra AI, prior creator of Google Maps, CTO Facebook, co-CEO Salesforce, chairman Twitter, board member OpenAI)
Ron Shaich (Panera co-founder, Au Bon Pain co-founder, investor it Cava and Tatte)
Takeaways from '1929: The Inside Story of the Greatest Crash in Wall Street History' by Andrew Ross Sorkin
“The next day traders seemed more apprehensive and dejected than he’d ever witnessed. Right at the start of the bell, the bloodbath began. Many blue chips plunged with momentum as a blizzard of sell orders from around the country blanketed the market…the panic became so pervasive, that brokers were willing to sell at any price. Soon many stocks had no bids at all at any price. Every convention of decorum was instantly forgotten. Running, yelling, pushing – hysteria was taking hold and a kind a madness took over. People saw their savings going down in chaos.”
By the early 1930s, the single biggest economic contraction in economic history was underway, including: 80% US stock market drop, 23% US unemployment (33% in Germany), 1/4 of American factory workers had lost their jobs, and over 11,000 banks in the US alone had failed.
Here’s how it happened.
The Lead-Up
In the early 1900s, millions of Americans left farms to take higher paying jobs in metropolitan areas. The banking system was very fragmented, undercapitalized, and struggling as the 19th century agricultural economy withered. As cities grew, the banking system became ever more imbalanced and precarious.
In 1919, GM struck a blow against the American taboo on taking personal loans by selling loans for buying cars. Soon after, Sears offered installment plans for expensive appliances like dishwashers. Wall Street then went one step further and started offering stock on credit. Americans stared sometimes buying stocks paying 80-90% in credit.
New York’s population swelled. In the 1920s New York had become a fundamentally different place than other American cities. By 1929 NYC had ~2,500 buildings of 10 stories or more (and The Empire State Building, Sears Tower, and Rockefeller Center were all in development). Chicago was in second with ~450. Of the ~200 Americans who reported personal incomes of more than 1 million dollars at the time, half were New Yorkers.
The Bubble
By the peak in 1929, the stock market had experienced nearly 7 years of uninterrupted growth, and in the last year doubled what it was in 1928. Then came October 1929, one of the worst month’s in stock market history and the start of an 80% fall over the next 2 years. “I doubt if anyone will ever disclose the specific thing that produced the debacle. It seemed to me that the time came when a sufficient number of people believed their hour to sell had come. Their actions started a wave of fear and everybody tried to sell at once. The machinery of the brokerage houses could not stand the strain, and that added to the panic that ensued.”
A well-known economist made a pessimistic quote about the market, a major English company was on the verge of collapse, and stocks fell as they sometimes do. Then in one week market went down 8%, leading to brokers issuing margin calls to customers. Investors short on cash watched as brokers sold off their positions to recover debts. Actions triggered yet more margin calls and more liquidation. The New York Stock Exchange was not equipped to handle the volume of activity, leading to even more panic and selling. The market dropped 33% over one month.
The momentum for stock market recovery was never more than episodic in the early 1930s. Every market rally eventually reversed course. Some in hours, some in days, some in months. There was no singular moment of high stakes drama, the air simply leaked out of the balloon day after day after day. Stocks ended 1930 down by 1/3 for the year. Then fell by 1/2 the following year. The collapse was not a moment. It was a relentless unraveling. The hope that a new bull market was imminent vanished.
The Aftermath
Major reduction in equity meant little equity to cover great quantities of debt, eviscerating the credit markets. Throughout 1930, small banks throughout the country began to fail. Americans didn’t trust banks anymore. Money was pulled out of banks and stored under mattresses. There was soon mass unemployment, chanty towns, and bread lines. The Great Depression had started.
By 1931, unemployment had nearly tripled and one quarter of American factory workers had lost their jobs. More than 1300 banks failed (mostly in small towns and rural areas). Bank failures were averaging 60 a month, then jumped to 254 one month in November, then 344 the next in December (on one single day 43 banks failed).
Quite surprisingly to me (sorry to my 11th grade history teacher who I know taught me this once…), Hoover most likely did not lose the 1932 election to FDR due to his handling of the economy. Around the election economic turmoil had quieted down, Dow had increased, and 2/3 of Americans polled at the time felt the Great Depression was over and businesses were recovering. Hoover lost because of prohibition - while FDR was against it, Hoover refused to run against it even though 83% of the country was against it by that point. Democrats/FDR agenda was to showcase and put forth the alternative he offered to the Republicans’ hand off approach to business.
New laws in the early 1930s: FDIC insurance for $2500, SEC established, separation of commercial and investment banking.
Miscellaneous Quotes
Highlights from four tech leaders (a16z, Slack, Spatial Computing, AI-powered deck creation) discussing good software design and the state of AI
Founder of Gamma ($100 ARR AI-powered slide deck software, started in 2020 now valued at $2 billion)
Marc Andreesen (a leading VC and former entrepreneur):
Founder of World Labs (Fei Fei Li, a major contributor to AI progress who is focusing on developing AI models that are spatially rather than linguistically intelligent):
Slack Founder on good software design:
November Pics from the NYC Marathon & Macys Day Parade
My friend Sridhar created an AI-powered website ‘clarion.today’ that curates content on measurable progress in the world. It reviews thousands of articles on progress in the world using Al agents to read, classify, and curate. I’ve been checking it almost everyday and it’s fantastic. Below are a few stories I might’ve missed if not for Clarion!
Jacinda Ardern became the world’s youngest female head of government at age 37, and eight months later became the world’s second elected head of government to give birth while in office.
After leaving office, she published an auto-biography covering her life, including winning the prime minister election after polling at 23% just seven weeks out and leading New Zealand for 6 years (including during Covid).
The core message of her book was essentially that leadership doesn’t have to look or sound like what we’re used to - empathy, humility, and even self doubt can be sources of great strength and impact.
Breaking the mold: Ardern’s entire career became a counter-example to many stereotypes we have about politicians:
Advice from Queen Elizabeth: when Ardern asked her for advice on raising children while leading a country:
Shout out to trout fishing:
Guiding advice from her dad, a police officer, after a situation when she thought he would have used force but he de-escalated peacefully:
The core passage of the book: the traits we often label as flaws can be our greatest strengths: