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Poka-Yoke

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11–20 of 48 posts

Re: Poka-Yoke

#11
post #10

"Anything that can go wrong, will go wrong" - Murphy "Dubble check that spelIng" - Muphry Murphy was a rocket engineer. One day their assistant plugged in a non-keyed connector upside down. It was very easy for that to go wrong. Another time, in another place, a rocket assembly worker hammered in a keyed connector - upside down. It was harder for that to go wrong, but, uh, life finds a way.

"If you design something to be idiot proof, the universe will design a better idiot."

Re: Poka-Yoke

#13
post #4
post #2

The mainstream French word for poka yoke is "détrompeur" but I prefer its obscure and vulgar vernacular "détrompe couillon" ("couillon" has no exact English equivalent, but you might know its Italian cousin "coglione"). Whichever name one prefers, hurray for simple interlocks that save the lives and limbs or tired inattentive operators. Dioxygen and nitrous oxide in surgical operating rooms using different connectors…

For the benefit of others who aren't so familiar couillons , it's one of the many proud descendants of the Latin cōleus which means "balls" in the sense of testicles or courage. Other etymological cousins include the Catalan colló , the Portuguese colhão ‎, and of course the notorious Spanish cojón . Hardly surprising these are still popular idioms.

Still not sure what the phrase means tbh.

A direct google translation comes back with "disabuse you idiot"

So maybe it means "idiot proof"?

Re: Poka-Yoke

#14
post #5

"Yoke" is pronounced like "yo K", not like the control wheel of an aircraft. (Then again, seeing how nobody pronounces Pokémon as Pokémon, I guess striving for accurate pronunciation is a lost cause)

"Yoh kay" as in "show slay"

Or "yoh keh" as in "moth fret"

?

I pronounce pokémon as "Poh Key Mon". Which is a third variation to "ké"

Re: Poka-Yoke

#15
post #13
post #4

Earlier quoted context omitted.

For the benefit of others who aren't so familiar couillons , it's one of the many proud descendants of the Latin cōleus which means "balls" in the sense of testicles or courage. Other etymological cousins include the Catalan colló , the Portuguese colhão ‎, and of course the notorious Spanish cojón . Hardly surprising these are still popular idioms.

Still not sure what the phrase means tbh. A direct google translation comes back with "disabuse you idiot" So maybe it means "idiot proof"?

Yes, idiot proof would be a correct translation. Or more literally, since "détrompe couillon" is a noun, an "idiot proofer", or "idiot-proofing feature".

Re: Poka-Yoke

#16
post #3

I like collecting little ideas like this. Slightly meta-ironically I'd describe the genre as "just abstract enough to be useful nuggets of knowledge" and I have an org file full of them. The hard part is I don't know any better name for such "concepts" so I can't search for other people's lists. Does anyone else keep a similar collect or have advice for finding more? (For example Gurwinder sometimes posts lists like…

Wasn't that sort of the genesis of KK's Cool Tools?

I don't know a more general name.

Re: Poka-Yoke

#17
post #14
post #5

"Yoke" is pronounced like "yo K", not like the control wheel of an aircraft. (Then again, seeing how nobody pronounces Pokémon as Pokémon, I guess striving for accurate pronunciation is a lost cause)

"Yoh kay" as in "show slay" Or "yoh keh" as in "moth fret" ? I pronounce pokémon as "Poh Key Mon". Which is a third variation to "ké"

I'm not japanese, but in the english speaking manufacturing industry, I've heard it pronounced like "show slay", as you suggest.

Re: Poka-Yoke

#18
post #5

"Yoke" is pronounced like "yo K", not like the control wheel of an aircraft. (Then again, seeing how nobody pronounces Pokémon as Pokémon, I guess striving for accurate pronunciation is a lost cause)

Calling it lost cause is a bit mean IMO, "truly accurate" pronunciation is never possible without substantial training and context switch into the target language. It's okay so long that messages go across(so key cars in place of kay cars is a bit problematic), asking for perfection is just unreasonable. Whatever the language in question might be.

Re: Poka-Yoke

#19
post #3

I like collecting little ideas like this. Slightly meta-ironically I'd describe the genre as "just abstract enough to be useful nuggets of knowledge" and I have an org file full of them. The hard part is I don't know any better name for such "concepts" so I can't search for other people's lists. Does anyone else keep a similar collect or have advice for finding more? (For example Gurwinder sometimes posts lists like…

Somewhat related is the idea of "Mental Models"... I sometimes see list of mental models that are kinda akin to what you're describing.

Re: Poka-Yoke

#20
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 signals. You probably do want to use the same family of connectors so they use common pins and have a common board footprint. So you get connectors which are the same except for having different keyways, and are often molded of different colors of plastic, by convention.

If you've ever been working on a vehicle and seen identical-looking connectors where one's black and one's gray, look closer. Along with a color difference, there's a notch on the housing in a different place.

This increases the number of parts that must be stocked, but the decrease in assembly errors is worth it. (And they all share the same tooling, so the manufacturing complexity isn't bad.)

Note that this isn't required if the connectors aren't candidates for mismating in the first place. If they appear in completely different places on the harness, then it's totally fine to reuse the very same connector for the amplifier speaker signals in the trunk, and the steering column (turnsignal stalks and stuff) module signals up front. This reduces parts count without increasing errors.

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