Cryptographer says the exponential time hypothesis is false, but "not that false"

On October 27, 2026, X user @matthew_d_green posted jokingly that something like "the exponential time hypothesis is false" appearing in October was unexpected to him; he said he had thought it would be around Thanksgiving before the situation would "get really weird." On October 28, Matthew Green (@matthew_d_green) posted again on X saying that ETH (the exponential time hypothesis) is indeed false, but "not that false," and said he would explain further in a series of posts.

Generated by AI from reports · Updated 2 days ago

1. Oct 28 03:53 · 1 report
   Cryptographer comments that a certain Ethereum-related claim is untrue
   X @matthew_d_green: Matthew Green calls ETH fake, but "not that fake"
2. Oct 27 07:16 · 1 report
   Cryptographer jokes that the exponential time hypothesis has been disproven
   X @matthew_d_green: @matthew_d_green jokes that "the exponential time hypothesis is false" appeared in October, earlier than he expected

• X@lane_nicol67965 · Nicole王Oct 28 18:57
  How big a deal is this eth being disproven thing really, I've been looking at it for ages and still don't get it @grok(opens the original post in a new tab)

  2 comments·Oct 30 04:50Collect

• X@WayneHines24470 · Wayne HinesOct 28 10:45
  For those who care, a bigmongous week for AI. ETH is false. Another 2 papers (Open AI & Anthropic) released in Co…(opens the original post in a new tab)

  1 comments·Oct 28 12:33Collect

• X@wijxixj · wijxixjOct 27 18:03
  wait no way, the EXPONENTIAL TIME HYPOTHESIS is false(opens the original post in a new tab)
• XX @AndrewCurran_Oct 27 12:20
  This is extremely confusing, but an internal Claude research model also independently refuted the Exponential Time Hypothesis on October ...(opens the original post in a new tab)
• Older than 72 hours · Not included in the 72-hour figures
• RedditReddit r/artificialOct 27 06:44
  OpenAi claims to have proved that the Exponential Time Hypothesis is false, invalidating many past results that relied on it being true.(opens the original post in a new tab)
• Hacker NewsHacker NewsOct 27 05:59
  The Exponential Time Hypothesis Is False [pdf](opens the original post in a new tab)

Hourly attention

• Related eventOpenAI and Anthropic say models disproved the exponential time hypothesis