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The Numbers Museum

Every specific figure ever claimed on the show. 451 match this view. Red rows are numbers the cited sources contradict.

AllDollarsMultiplesPercentagesBig numbers
FigureAs spokenThe claimWhoWhenChecked?
5% “Five percent” Ralston: Standard MOOC completion rate is five percent Geoff Ralston Aug 7, 2018 Supported
5% “five percent” Altman: Startups should grant 3-5% equity to employees every year Sam Altman May 1, 2017 —
4% “four percent” SemiAnalysis reports Claude Code generates four percent of all public commits Boris Cherny Feb 17, 2026 Supported
4% “four percent” Green: Major CPG firm saw word-of-mouth sales jump from 4% to 48% Kirsten Green Jun 27, 2025 —
4% “four percent” Palicha: Zepto had only 3-4% weekly retention with one-hour delivery Aadit Palicha Apr 18, 2025 —
4% “four percent” Srini: A 4% mortgage pays off only ~8% principal in 5 years Laks Srini Dec 11, 2019 Partly supported
3% “three percent” Hu: Google Gemini adoption in YC batch rose to around 23% Diana Hu Dec 22, 2025 —
3% “three percent” Epstein: Only 3% of top 100 YC companies rely primarily on ads Aaron Epstein Dec 15, 2022 Supported
3% “three percent” Epstein: Stripe initially tested value by charging 5% per transaction Aaron Epstein Dec 15, 2022 Supported
3% “three percent” Braswell: Low baseline diversity means underrepresented applicants lack internal job champions Porter Braswell Mar 21, 2018 —
3% “three percent” Braswell: Low diversity in non-technical tech roles disproves the pipeline excuse Porter Braswell Mar 21, 2018 —
3% “three percent” Zaremba: ImageNet error dropped to 3%, achieving superhuman vision performance Wojciech Zaremba May 17, 2017 Supported
2.6% “2.6%” Alströmer: Mandatory signup wall increased Airbnb iOS bookings by 2.6% Gustaf Alströmer Aug 15, 2019 —
2.5% “2.5%” Bosmeny: Only 2.5% of companies will buy from an unproven startup Tyler Bosmeny Sep 26, 2018 —
2.4% “2.4%” Finn: Bedroom and kitchen tidying data was only 2.4% of pre-training mix Chelsea Finn Jul 22, 2025 —
2% “two percent” Brex's AI Recruiting Agent Auto-Passes 98% of Security Checks Pedro Franceschi Jun 10, 2026 —
2% “two percent” Chollet: Base LLMs score 0% and static reasoning scores 1-2% on ARC-2 François Chollet Jul 3, 2025 Supported
2% “two percent” Elon Musk: Raw materials are only 1% to 2% of rocket costs Elon Musk Jun 19, 2025 Supported
2% “Two percent” Seibel: A fake advisor took 2% equity and failed to raise our round Michael Seibel Oct 28, 2022 —
2% “two percent” Saez-Gil: Less than 2% of $80B carbon market funds forestry Diego Saez-Gil Jan 28, 2020 Supported
2% “two percent” Alströmer: Only 1% to 2% of Airbnb homepage visitors reached booking page Gustaf Alströmer Aug 15, 2019 —
2% “Two percent” Migicovsky: Top investors prefer startups targeting small initial markets Eric Migicovsky Oct 12, 2018 —
2% “two percent” Chinese families spend 15% of income on supplemental education versus US's 2% Cindy Mi Jan 16, 2019 Partly supported
2% “two percent” Less than two percent of Nigerian consumer spending uses cards Shola Akinlade Oct 16, 2018 Partly supported
2% “two percent” Petersen: Only 2% of Flexport Shipments Were Hit by First China Tariffs Ryan Petersen Aug 30, 2018 —
2% “two percent” Petersen: The largest global freight forwarder has only 2% market share Ryan Petersen Aug 30, 2018 Contradicted
2% “two percent” Ralston: Y Combinator's admission rate is between 1% and 2% Geoff Ralston Aug 7, 2018 Supported
2% “two percent” Braswell: Low baseline diversity means underrepresented applicants lack internal job champions Porter Braswell Mar 21, 2018 —
2% “two percent” Braswell: Low diversity in non-technical tech roles disproves the pipeline excuse Porter Braswell Mar 21, 2018 —
2% “two percent” Thompson: In 2011 Shanghai, 40% corporate growth felt like sandbagging Avni Patel Thompson Mar 2, 2018 —
1.5% “1.5%” Pachama's ML model predicts New England forest carbon under 1.5% error Diego Saez-Gil Jan 28, 2020 Contradicted
1% “one percent” Dean: AI startups should target tasks with 1% model success, not 20% Jeff Dean Jul 30, 2026 —
1% “1%” Franceschi: True AI Adoption Is Low Because Few Hit Max Plan Limits Pedro Franceschi Jun 10, 2026 —
1% “one percent” Tan: Webflow powers 1% of all websites on the internet Garry Tan Jun 19, 2026 Partly supported
1% “a percent” Tan: Jeff Lawson was ousted from Twilio 199 days after voting protections expired Garry Tan May 22, 2026 Supported
1% “one percent” Mellata: AI agent triage leaves a complex 1% requiring investigative dashboards Karine Malata Mar 31, 2026 —
1% “one percent” Jumper: AlphaFold 2 architecture on 1% of data matched AlphaFold 1 John Jumper Jul 15, 2025 Supported
1% “one percent” Truell: ChatGPT supposedly cost only 1% more to train than GPT-3 Michael Truell Jun 11, 2025 —
1% “one percent” Hu: Top 1% engineers will still require deliberate practice despite AI Diana Hu Mar 5, 2025 —
1% “one percent” Caldwell says early technical employees doing co-founder work get hosed with 1%. Dalton Caldwell Nov 1, 2023 —
1% “One percent” Alströmer: Only 1% to 2% of Airbnb homepage visitors reached booking page Gustaf Alströmer Aug 15, 2019 —
1% “one percent” Adora Cheung: 1% weekly growth means a startup lacks billion-dollar potential Adora Cheung Aug 1, 2019 —
1% “one percent” Rossmann: Up to 75% of elite university students have wealthy parents Jeremy Rossmann Jun 19, 2019 Supported
1% “one percent” Alströmer: Airbnb boosted total revenue by over 1% by extending session length Gustaf Alströmer Jun 26, 2019 —
1% “one percent” Knoop: Platforms are viable when 1% of revenue could be a business Mike Knoop Mar 6, 2019 —
1% “A percent” Berkshire Hathaway Class B Stockholders Get an 8% Geico Discount Karn Saroya Feb 27, 2019 Supported
1% “1%” Brundage: Reducing AI existential risk by 0.1% preserves massive expected value Miles Brundage Apr 25, 2018 —
1% “a percent” Buchheit: FriendFeed sold to Facebook for about 0.5% equity Paul Buchheit Mar 7, 2018 —
1% “one percent” Zaremba: AlexNet achieved a 15% ImageNet error rate versus competitors' 25% Wojciech Zaremba May 17, 2017 Supported
0.5% “half percent” Livingston: 34.5% of YC's female founders started companies with significant others Jessica Livingston Mar 12, 2014 —
0% “0.0000001%” Doctorow: Facebook targets behavioral correlates, not mind control Cory Doctorow Nov 27, 2019 —
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