ProllyInfamousApr 2026Strongly recommends
Zoom out, too: [CGP Grey - Metric Paper] < ▶ this video > - among my favorite videos Yet even Plancks remain analogue ...
in “God Sleeps in the Minerals” · View on HN
A4 Paper Is Too Perfect
A4 Paper Is Too Perfect on HackerTube: recommended by 2 Hacker News commenters across 2 separate months, 2024–2026.
CGP Grey
Open on YouTubeexplainer · evergreen
CGP Grey explains the elegant ratio of A4 and the metric paper sizes, then zooms out across scales from the Planck length to the observable universe.
Why Hacker News recommends it
Loved for its zoom-out tour of physical scales and recommended alongside other paper-size and scale-of-the-universe discussions.
- people recommended it
- 2
- separate months
- 2
- strong recommendations
- 2
- discussed on HN
- 2024–2026
“the most psychedelic experience one can have without doing drugs”
What HN commenters said
5 Hacker News comments link this video. Each one links back to its thread.
ProllyInfamousJan 2026Strongly recommends
You beat me in posting this (I searched for "CGP," first — you mispelled so I didn't see your comment). ---- My favorite CGP Grey video is Metric Paper... , which explores the vast (but limited) world we live in, from plancs to observable universe. [•] < ▶ this video > Before generative AI videos, this had been what I considered "the most psychedelic experience one can have without doing drugs ." It's still a trip ...
in “A4 Paper Stories” · View on HN
jihadjihadJan 2026Recommends
CPG Grey has a video [0] that goes into some, let's just say deeper , detail into metric paper that is well worth a watch if you haven't seen it. 0: ▶ this video
in “A4 Paper Stories” · View on HN
bogtogApr 2024Cites it
I think this Zoom in/out physics story has pretty widely been told. Here is one by CPG Grey: ▶ this video I like the one OP linked here. All the objects being clickable with a little description is nice
in “Scale of the Universe” · View on HN
xanthFeb 2024Cites it
Related CGPGrey video comparing metric paper sizes to comparable objects from the plank scale to the galactic[1]; could have been an XKCD comic [1]: ▶ this video
in “Making a PDF that's larger than Germany” · View on HN
Topics & tags
Recreational & visual mathPhysics & space (other)a4 papermetric systemscale of the universeiso 216cgp grey