Learning & ideas · Durable canon
Show HN: Every mountain, building and tree shadow mapped for any date and time
shademap.app · first seen 2021 · unchecked
39.8durability100% evidence confidence
Why it endures
Independent rediscovery across 5 active years.
The score rewards recurring year-relative traction, distinct submitters, and strong appearances separated across HN generations. Link survival does not change cultural durability.
Read the original ↗- Submissions
- 16
- People
- 13
- Peak
- 685
- Status
- unchecked
Submission history
2021—2026
Bars show the number of normalized submissions in each year. Annual traction inside the score is percentile-adjusted.
Explainable score
Every point has a reason.
Repeat traction3.9/30
Independent discovery16.7/20
Persistence14.2/20
Generational reach0.0/20
Sustained discussion5.0/10
