La seconde qui a fait planter Internet

La seconde qui a fait planter Internet

The second that crashed the Internet

Title history
  • La seconde qui a fait planter Internet — observed on 20261101-0113 UTC (YouTube)
🎙 Numerama 👥 276K 📅 June 21, 2026 ⏱ 12 min 👁 140K 📄 science communication 🧭 2026-11-01
Available in: English (current) Français

Keywords

leap secondUTCatomic timecomputer bugtime measurement

Summary

This video from Numerama explores the historical and technical context behind the 2012 leap second incident that caused widespread computer outages. It begins by tracing the origins of our 24-hour/60-minute system to Babylonian sexagesimal division, and mentions the failed decimal time reform during the French Revolution. The narrative then explains how the need for synchronized national time arose with railways, and how the Earth’s irregular rotation led to the adoption of atomic time. The core of the video discusses the creation of UTC and the leap second as a compromise between atomic and astronomical time. It details the 2012 bug where a 61-second minute crashed servers for airlines, Reddit, and other services. The video also covers the ’leap smear’ technique used by tech companies to avoid crashes, and the recent decision to abandon leap seconds by 2035. It highlights the philosophical shift towards a time fully decoupled from the Earth’s rotation. The presentation includes a sponsored segment of approximately 101 seconds.

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Critical Evaluation

Value of the Information & Strength of the Argument

The video provides valuable insights into the often-overlooked complexities of time measurement, blending history, physics, and computer science. Its argumentation is solid, building logically from ancient timekeeping to modern technological challenges. The explanation of leap seconds and the reasoning behind their potential abolition is clear and supported by expert commentary. The use of the 2012 bug as a concrete example effectively illustrates the real-world impact of time irregularities. The video also raises interesting philosophical questions about our relationship with natural time versus technological time, making it thought-provoking beyond mere factual presentation.

Scientific Rigor, Source Quality, Title Accuracy

The video demonstrates strong rigor by consulting a recognized authority, Denis Savoie, and referencing official bodies such as the Bureau des Longitudes and the General Conference on Weights and Measures. While no specific scientific papers are cited, the information aligns with established knowledge about leap seconds and time standards. The title accurately represents the content, focusing on the leap second crash and its broader implications. The video clearly discloses its sponsored segment, which is integrated into the narrative but doesn’t undermine the factual content. Overall, the source quality is good, though it relies primarily on expert opinion and historical facts rather than peer-reviewed literature.

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Title / Content Match

The title accurately reflects the content: the video explains the 2012 leap second bug and the broader context of timekeeping.

Quality & Reliability

8/10

The video is well-researched, features a recognized expert (Denis Savoie, Observatoire de Paris), and covers historical and technical facts accurately. It simplifies complex aspects for a general audience but maintains factual correctness.

Chapters

Cited Sources

Contribution & Novelties

The video provides an original synthesis of historical timekeeping and modern computing issues, making the leap second controversy accessible to a broad audience. Its novelty lies in linking ancient practices to contemporary digital infrastructure failures, and explaining the 2035 decision to abandon leap seconds. It offers a clear narrative of how nature and technology have become increasingly detached.

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Radar Profile

The radar profile shows a balanced performance with high scores in information quality and reliability, decent quantity and technical level. The video is strong on accurate content and expert backing, while being slightly more modest in depth and technical detail, reflecting its accessible approach.

Reliability 8/10