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colmmacc's profile
Colm MacCárthaigh
Colm MacCárthaigh
Colm MacCárthaigh
@colmmacc

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Colm MacCárthaigh

@colmmacc

AWS, Apache, Crypto, Irish Music, Haiku, Photography

Seattle
notesfromthesound.com
Joined April 2008

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    1. Jacob‏ @jhscott 18 Jul 2019
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      Replying to @colmmacc @copyconstruct @Amazon_Route_53

      https://how.complexsystems.fail/  is from 1998, so not exactly bleeding edge?

      1 reply 0 retweets 2 likes
    2. Jacob‏ @jhscott 18 Jul 2019
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      Replying to @jhscott @colmmacc @copyconstruct

      Jacob Retweeted

      For 5 whys, see e.g. https://twitter.com/UberGeekGirl/status/1114358940471447552 … and/or ask "How did we end up incorporating 5Whys & RCA into postmortems anyhow" (perhaps it was cargo culting?)

      Jacob added,

      This Tweet is unavailable.
      2 replies 0 retweets 1 like
    3. Colm MacCárthaigh‏ @colmmacc 18 Jul 2019
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      Replying to @jhscott @copyconstruct

      I'm just rolling my eyes more now. 5 why's does not enforce a single pathway, and you don't have to stop at 5 anythings.

      2 replies 0 retweets 1 like
    4. Jacob‏ @jhscott 18 Jul 2019
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      Replying to @colmmacc @copyconstruct

      if 5whys doesn't enforce a single pathway, or linearize, or come with assumptions about incidents having a root cause, or require you to ask exactly 5 times... is it even (Toyota/LMS) 5 Whys?pic.twitter.com/vHM3OFVLZ5

      1 reply 0 retweets 0 likes
    5. Jacob‏ @jhscott 18 Jul 2019
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      Replying to @jhscott @colmmacc @copyconstruct

      If you're saying we should look holistically at multiple levels and layers of incidents and talk to people about how they experienced incidents and the rationale behind their actions at the time... I think we agree? In which case this is just a terminology issue?

      1 reply 0 retweets 0 likes
    6. Colm MacCárthaigh‏ @colmmacc 18 Jul 2019
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      Replying to @jhscott @copyconstruct

      I find it very hard to take seriously, almost to the point of seeing it as arguing in bad faith, that 5Y critics earnestly believe that any serious practitioner would blindly doctrinally apply any mechanism like that.

      2 replies 0 retweets 2 likes
    7. Jacob‏ @jhscott 18 Jul 2019
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      Replying to @colmmacc @copyconstruct

      I'm probably making my point poorly, that said I do generally agree with (warning, long) https://www.oreilly.com/ideas/the-infinite-hows … I'd say the key points are 1) "why" frequently leading to a counterfactual framing when reviewing human actions ("why did the on call not check the graph?)" (1/2)

      1 reply 0 retweets 0 likes
    8. Jacob‏ @jhscott 18 Jul 2019
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      Replying to @jhscott @colmmacc @copyconstruct

      (2) "The reality is that there is no such thing as the cause, or primary cause or root cause" (this quote is from Dekker, but similar concept is in How Complex Systems Fail linked above)

      1 reply 0 retweets 0 likes
    9. Colm MacCárthaigh‏ @colmmacc 18 Jul 2019
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      Replying to @jhscott @copyconstruct

      More eye-rolling. The notion that the specific words "why"/"how" relates to "who"/"what" is sophomoric garbage. Tending to pin blame on people, rather than environments and systems, or being satisfied with shallow proximate explanations, are independent cultural phenomena.

      2 replies 0 retweets 0 likes
    10. John Allspaw‏ @allspaw 19 Jul 2019
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      Replying to @colmmacc @jhscott @copyconstruct

      “Sophomoric garbage” and eye-rolling. Amazing.

      1 reply 0 retweets 1 like
      Colm MacCárthaigh‏ @colmmacc 19 Jul 2019
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      Replying to @allspaw @jhscott @copyconstruct

      I’ll lay out my experience and thoughts on this topic with more detail and respect, so apologies for the short dismissiveness for now. I don’t think why/how matters, it’s what goes with it. I also think events and causes can be reconstructed to an underestimated degree.

      7:40 AM - 19 Jul 2019 from Seattle, WA
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      1 reply 0 retweets 2 likes
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        2. John Allspaw‏ @allspaw 19 Jul 2019
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          Replying to @colmmacc @jhscott @copyconstruct

          The dismissiveness on these topics and perspectives is something I’ve heard from others at Amazon, although I’m unsure if there is a connection there.

          2 replies 0 retweets 1 like
        3. Colm MacCárthaigh‏ @colmmacc 19 Jul 2019
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          Replying to @allspaw @jhscott @copyconstruct

          I suspect there is a connection. Amazon values operational excellence very deeply, but we don't share a lot of our culture and lessons. It may be hubris on our part, but we also think we have a very strong record ...

          1 reply 0 retweets 2 likes
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