demo · HACKER NEWS RECOMMENDATION
APL demonstration 1975
Imperial College London · 5 HN recommenders · 4 recommendation months
Recommended by 5 Hacker News commenters across 4 months (2014–2021).
SignalTube analysis
Among 57 other demo videos tagged History of computing, the mean is 1.6 distinct HN recommenders. This video has 5 distinct HN recommenders, about 3.1× that mean. Recommendations span 4 distinct months; the peer average is 1.8 months. This is a data-derived comparison, not a human review or quality rating.
63% of its 8 labeled comments are marked as recommendations or strong recommendations. HN mention years are 2014–2021; those years describe discussion history, not upload date. Its verified runtime is 28 minutes 0 seconds. YouTube lists its publication date as 2013-07-12.
- Channel / speaker
- Imperial College London
- Verified runtime
- 28m 0s
- YouTube upload date
- 2013-07-12
- Hacker News mention years
- 2014–2021
SAME TOPIC AND FORMAT
Compare with related videos
The comparison cohort uses other demo videos in History of computing. “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 |
|---|---|---|---|---|---|---|
| APL demonstration 1975Current video | 5 | 4 | 63% | — | 28m 0s | 2013-07-12 |
| The Mother of All Demos, presented by Douglas Engelbart (1968)demo · Marcel | 8 | 8 | 40% | No recorded overlap | 100m 53s | 2012-07-09 |
| Alan Kay's tribute to Ted Nelson at "Intertwingled" Festivaldemo · TheTedNelson | 7 | 10 | 55% | No recorded overlap | 17m 33s | 2014-11-01 |
| Ivan Sutherland Sketchpad Demo 1963demo · Interface Studies | 5 | 5 | 38% | No recorded overlap | 19m 20s | 2012-05-30 |
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 recommendation in “IBM unveils 127-qubit quantum processor”. Its short rationale: REPL on a Selectric teletype upended view of computer history.
The archive classifies this as a contextual reference in “Python should take a lesson from APL: Walrus operator not needed”. Its short rationale: Shows the APL symbol at the 20-minute mark.
The archive classifies this as a recommendation in “A+, the Programming Language of Morgan Stanley”. Its short rationale: Half-hour intro showing APL's motivation for non-programmer users.