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Poka-yoke

en.wikipedia.org Reference Encyclopedia entries Economics & business Candidate
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Page preview · captured 2026-07-20

Resurfaced independently across 9 calendar years, with breakout response in 2 of them.

submissions
12
submitters
12
observed span
2011–2026
peak thread · 62 comments
160 pts
latest 20+ return · 2025-01-09
69 pts

Submission timeline

2007–2026

One slot for every year since HN launched. Height is that year's peak points; orange marks a 100+ point or 50+ comment breakout. Select a bar to open its strongest thread.

First comments on top threads

HN comment order

This seems like an interesting and useful process design concept on one hand, and on the other hand, it also sounds like a Japanese buzzword for foolproofing (in fact, the article notes that the term was originally “baka-yoke”, which is literally “foolproof” or “idiot-proof”). On the one hand, I don’t think Toyota invented the concept of foolproofing; on the other hand, giving it a cool buzzword gives you an excuse to talk about it, which means you’re more likely to…

Slightly different to what is described here, but one of my pet peeves is the "nuclear button" features that devs put in their software - ie easy to activate features that add marginal utility to specific niche workflows but cause irreversible damage to everyone else. Firefox deleting every single one of your pinned tabs on close if you have a second window open is an example of this, as is YouTube jumping to a different part of the video every…

In my industry, we mostly use the term to refer to mechanical features, typically keyways, that prevent connectors from being mated incorrectly. Suppose you have a module with 50 pins worth of connectors, but because some of the signals are in different harnesses which get installed at different times, you can't just use a 50-pin connector. For this example let's say it's sensible to break it up as 20+20+10. You wouldn't use two identical 20-pin connectors since they carry different…

Designing infrastructure and processes to reduce human error is a very important topic. With the recent AI boom, many engineers are working on figuring out how to build infrastructure that reduces AI errors. We rediscover many techniques (eg writing good specs) that were once used for humans, but then abandoned.

adrianN·15-point thread·

The first top-level comment from each of the four biggest threads, in HN’s own order. Excerpts are shortened; open a comment for full context.

Breakout years
2

100+ points or 50+ comments

Total points
359

reference only — not used in Hall rules or ranking

Total comments
171

reference only — not used in Hall rules or ranking

Every submission

DateTitle as submittedByPointsComments
2011-07-13Poka-yoke (ポカヨケ)shawndumas20
2015-03-12Poka-yokecaffeinewriter10
2016-02-14Poka-yokemonort10
2016-10-14Poka-yokesandinmyjoints20
2018-05-19Poka-yoke: Mistake Proofingcosmie10
2018-09-23Poka-yokeFirst breakout · Best threadvitoc16060
2021-01-22“Poka-yoke” means “mistake-proofing” or “inadvertent error prevention”xdavidliu20
2021-09-08Poka Yokerfreytag9962
2023-08-09Poka-Yoke (ポカヨケ) – Mistake-Proofingmhb41
2024-07-24Poka-Yokegone3530
2025-01-09Poka-YokeLatest 20+ point returnlogikblok6946
2026-05-09Poka-Yokethe-mitr152