3251: Time Machine Conversation
Cueball travels back to the Iron Age and converses with Hairbun, an ancient farmer. He is surprised to discover that she is unaware of the compass, a tool not invented until after her time. Cueball worries that his explanations could create a paradox or spoil future discoveries for her.
- ▪Cueball uses a time machine to visit the Iron Age and meets Hairbun, a farmer.
- ▪He finds that Hairbun does not know about the compass, which was invented after the Iron Age.
- ▪Cueball is concerned that explaining the compass could disrupt history or spoil future discoveries.
Explain xkcd files mainly under misc. We currently carry 6 of its stories.
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Story provenance
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Record
| Original publisher | Explain xkcd |
| Canonical URL | https://www.explainxkcd.com/wiki/index.php/3251:_Time_Machine_Conversation |
| Publication time | 2026-05-27T21:06:49Z |
| Retrieval time | 2026-05-27T21:08:04.683Z |
| Last seen | 2026-05-27T21:08:04.683Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | kzRC9HvktSud |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
WeSearch handling by dimension
| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
Time Machine Conversation|<< Prev#3251 (May 27, 2026)Next >>|Title text: It's possible to do sea navigation without a compass, but you'll have to get some spoilers from the Polynesians.|<< PrevRandom ExplanationNext >>| Explanation[edit] This is one of 44 incomplete explanations:Spoiler alert! This page was created in the past.[citation needed] Don't remove this notice too soon. If you can fix this issue, edit the page! Cueball has used a time machine to travel to the Iron Age and has a conversation with an ancient-times version of Hairbun (who seems to be a farmer, since she's holding a pretty modern-looking hoe and seems to be particularly knowledgable of the 'latest' plow developments).
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Excerpt limited to ~120 words for fair-use compliance. The full article is at Explain xkcd.
