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Jason Fantl

Personal blog · jasonfantl.com/posts · on HN as jfantlprogrammingscience

Jason Fantl's personal blog at jasonfantl.com covers programming and science. Since 2023, 5 different Hacker News readers have linked it 23 times, most often “Cosmologically Unique IDs”. It is still writing: the last post was on 2026-06-06, and you can follow it by feed.

Visit the blog
23mentions?
5HN people?
2023–2026first – last linked?
Links on Hacker News per year · peak 9 in 2025

Too few sampled comments (1) to say how often HN recommends it.?

Why HN links it

HN readers link this blog for a thought experiment on UUIDs: how many bits an ID space would need if the universe generated UUIDs until its heat death.

Summarised by Claude from a sample of 1 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.

A blog where I write about my computer science projects, usually with some animations, code, and/or simulations.

The author on HN?

jfantl · 493 karma · member since 2023

[ my public key: https://keybase.io/jasonfantl; my proof: https://keybase.io/jasonfantl/sigs/XRzG4SGYNZkNitziUeKcuERyw0PQLLVo7YKudWPeipM ] meet.hn/city/42.3656347,-71.1040018/Cambridge Socials: - github.com/Jasonfantl - Jasonfantl.com ---

From their public HN profile, which links to this site.

Most-linked posts?

  1. Cosmologically Unique IDs
    3 people · 3 mentions · first linked 2026-02-14

What Hacker News says?

  1. This is awesome stuff, I'm going to look into getting this running my Pis this weekend. How hard would it be to add in custom services? I like to play with decentralized algorithms such as Size Estimation and Clock Synchronization ( https://jasonfantl.com/ ) and have always wanted to get them running on real hardware.

    Comment linking /

    on “Show HN: Decentralized robots (and things) orchestration system”
  2. Submitted What Is Entropy? as a story · 288 points

    HN discussion
  3. https://jasonfantl.com/

    Comment linking /

    on “Ask HN: Could you share your personal website here?”
  4. Submitted Rediscovering Quaternions as a story · 125 points

    HN discussion
  5. dweez · 2026-05-08Recommends
    Good moment to revisit this fun article: https://jasonfantl.com/posts/Universal-Unique-IDs/ If the entire universe were turned into a giant computer and did nothing but generate uuids until its heat death, how many bits would you need for the ID space?

    Comment linking /posts/Universal-Unique-IDs/

    on “Ask HN: We just had an actual UUID v4 collision...”
  6. Submitted Simulated Economy Tutorial as a story · 106 points

    HN discussion
  7. I did something similar, but started somewhere different: The individuals personal value of a good. You might find it interesting as a different approach to a similar project. https://jasonfantl.com/posts/Simulated-Economy-(1)/

    Comment linking /posts/Simulated-Economy-(1)/

    on “Building an Economy Simulator from Scratch”
  8. Submitted Voice Controlled Swarms as a story · 33 points

    HN discussion
  9. https://jasonfantl.com Brief posts on topics I'm interested in, or projects I've worked on. My favorites: - shaping swarms: https://jasonfantl.com/posts/Shaping-Swarms/ - simulating a simple economy: https://jasonfantl.com/categories/simulated-economy/

    Comment linking /categories/simulated-economy/

    on “Ask HN: Could you share your personal blog here?”
  10. Submitted Cosmologically Unique IDs as a story · 11 points

    HN discussion
  11. Submitted Prototyping a Voice-Controlled RTS Game with LLM Agents (Part 1) as a story · 6 points

    HN discussion
  12. Submitted Broadcasts in Reliable Ad-Hoc Networks as a story · 4 points

    HN discussion
  13. Submitted Medium Access Control Protocols as a story · 2 points

    HN discussion
  14. Submitted Universal Codes for Variable-Length Encoding as a story · 2 points

    HN discussion
  15. Submitted Collision Avoidance as a story · 2 points

    HN discussion
  16. Submitted Swarm Cluster Identification as a story · 2 points

    HN discussion
  17. Submitted Bit Propagation over a Noisy Grid as a story · 1 points

    HN discussion
  18. Submitted Cosmologically Unique IDs as a story · 1 points

    HN discussion
  19. Submitted Firefly Synchronization as a story · 1 points

    HN discussion
  20. Submitted Simulating a Toy Economy as a story · 1 points

    HN discussion
  21. Submitted Dynamic Swarm Cluster Identification as a story · 1 points

    HN discussion

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