explainer · HACKER NEWS RECOMMENDATION
What keeps a train on the track?
BoreMeScience · 1 HN recommenders · 1 recommendation months
Recommended by 1 Hacker News commenters across 1 months (2019–2022).
SignalTube analysis
Among 81 other explainer videos tagged Fundamental physics, the mean is 2.8 distinct HN recommenders. This video has 1 distinct HN recommenders, below that mean. Recommendations span 1 distinct month; the peer average is 2.5 months. This is a data-derived comparison, not a human review or quality rating.
33% of its 3 labeled comments are marked as recommendations or strong recommendations. HN mention years are 2019–2022; those years describe discussion history, not upload date. Its verified runtime is 2 minutes 27 seconds. YouTube lists its publication date as 2009-09-22.
- Channel / speaker
- BoreMeScience
- Verified runtime
- 2m 27s
- YouTube upload date
- 2009-09-22
- Hacker News mention years
- 2019–2022
SAME TOPIC AND FORMAT
Compare with related videos
The comparison cohort uses other explainer videos in Fundamental physics. “Shared recommenders” counts HN users who recommended both videos in the source graph.
| Video | HN recommenders | Recommendation months | Positive label share | Shared recommenders | Runtime | Upload date |
|---|---|---|---|---|---|---|
| What keeps a train on the track?Current video | 1 | 1 | 33% | — | 2m 27s | 2009-09-22 |
| The Speed of Light is NOT About Lightexplainer · PBS Space Time | 8 | 8 | 67% | No recorded overlap | 12m 46s | 2015-10-07 |
| A new way to visualize General Relativityexplainer · ScienceClic English | 8 | 6 | 89% | No recorded overlap | 11m 33s | 2020-09-03 |
| How to Understand What Black Holes Look Likeexplainer · Veritasium | 8 | 4 | 80% | No recorded overlap | 9m 19s | 2019-04-09 |
THREE SOURCE-BASED CONTEXT POINTS
Why Hacker News recommends it
Each note combines the dataset’s stance label and short rationale; comment bodies are not reproduced. Open the HN source for the original discussion.
The archive classifies this as a contextual reference in “Why BART uses a nonstandard broad gauge”. Its short rationale: the source snapshot has no short rationale for this mention.
The archive classifies this as a recommendation in “New slats make the Golden Gate Bridge sound like a David Lynch movie”. Its short rationale: Explains how conical wheels self-steer on curves.
The archive classifies this as a contextual reference in “The Space Shuttle and the Horse's Rear End (2000)”. Its short rationale: Feynman on why train axles need no differentials.