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The International Bureau of Weights and Measures (BIPM) announced it will stop issuing leap seconds in May 2027, ending a decades-long debate after concerns that a negative leap second could disrupt technology systems worldwide.
国际计量局（BIPM）投票决定提前废除闰秒，原定2035年的计划将提前至明年5月20日生效，改用“闰小时”方案以避免潜在的基础设施故障。Meta、Google、微软和亚马逊等科技巨头此前均支持取消闰秒系统。
The 28th CGPM adopted Resolution 5 (2026) laying out technical actions to ensure UTC remains continuous, effectively ending leap second adjustments to keep atomic time in sync with Earth's rotation to avoid disruption of critical infrastructure.
BIPM's 28th CGPM adopts Resolution 5 (2026) outlining technical actions to keep Coordinated Universal Time (UTC) continuous, raising the maximum |UT1−UTC| offset to avoid risky negative leap seconds, with a 30% probability of one by 2035.
An explainer about Vienna Standard Mean Ocean Water (VSMOW), the official international water standard used in precise measurements, and why its purity and isotopic composition make it extremely expensive.
This paper introduces a psychometric datasheet protocol for evaluating LLM judges as measurement instruments, measuring dark current, positional false preference, stable cross-sensitivity, and target sensitivity. A case study on three open-weight models reveals significant differences in judge quality and behavior.
Discusses the structural weakness of current evaluation methods for LLMs, which fail to anticipate qualitative shifts in capability, and argues that developing proactive evaluation infrastructure is the critical bottleneck for safe capability jumps.