iSixSigma

Hal

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  • #182003

    Hal
    Participant

    This paper explains the 1.5 nonsense :
    http://www.qualitydigest.com/inside/six-sigma-article/six-sigma-lessons-deming-part-1
     … and this one for more detail on the origins of the 1.5:
    http://www.qualitydigest.com/node/5900

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    #182001

    Hal
    Participant

    It was invented by Mikel Harry.  Read his original derivation and you will find that it was based on stacks of disks !!!  Incredible but true.
    The 1.5 drift (and later “correction” then “dynamic mean offset”) is pure rubbish ! 

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    #181577

    Hal
    Participant

    All questions are impossible to answer because in real world situations it is impossible to ever know the data distribution.
    It takes 3200 measurements to determine the distribution to 2.95 sigma but by the time you do this, the distribution will have changed.
    Tell your tutor the questions are meaningless.

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    #163894

    Hal
    Participant

    ISSSP is very good with lots of presentations from various customer segments, video, case studies, and articles.

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    #151030

    Hal
    Participant

    It is one thing to have snake oil merchants flogging the nonsense of six sigma to the naive, but it is quite pathetic to hear that a professor is actually teaching it. 
    Read the truth here:  http://users.bigpond.net.au/SixSigmaFallacies/

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    #150921

    Hal
    Participant

    It would be nice, just for ince, to see someone here who knows how to describe a problem.  SS training gets so lost in numbers it forgets what it is trying to achieve.

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    #150352

    Hal
    Participant

    You are confused (or perhaps trying to mislead readers).  Your links make no mention of Honda using six sigma.  Honda uses Quality Circles. 
    “Honda Cars Makati, Inc. (HCMI) scored a major victory when it won the Gold Award in the 2005 Productivity Improvement Circles National Convention “
    http://www.hondamakati.com.ph/Ver2/News&Events/Default.asp?IDs=19&Submit=CN
    Honda even runs its own supplier Quality Circles competition :
    http://www.weastec.com/home.nsf/continuous%20improvement?OpenForm

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    #149890

    Hal
    Participant

    Remember the Ford Edge story … 10,000 dedicated black belts couldn’t make it work … and they had to call in outside help.

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    #149888

    Hal
    Participant

    BritW,
    “Making the leap that all we need to do (or that Smith was advocating) is to widen specs and we all look better, sell more, and make more money, is rediculous.”
    Good to see that you have realized the stupidity of six sigma !!!!!!!!!!!!

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    #149618

    Hal
    Participant

    With reference to processes, and not surveys of people and other such enumerative studies that are frequently quoted here, how many processes do you actually think are perfectly normally distributed ?
    Have you ever used a Pearson lack of fit test ?

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    #149578

    Hal
    Participant

    One of six sigma’s many flaws is it’s obsession with normal distributions.  This appears to stem from six sigma tables which require data to be normal.
    There is no need for data transforms.  Control charts don’t need them, nor do histograms.  Transformed data loses its meaning.  Transforms will also require inverse transforms that become too complex for practical purposes.

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    #149511

    Hal
    Participant

    Higher staff turnover is an inevitable consequence of six sigma. Compare the two approaches:
    1. “In short, numbers-oriented thinking applies to people as much as it applies to processes and products. ” – Mikel Harry
    2. “Remove barriers that rob the hourly worker of their right to pride of workmanship. The responsibility of supervisors must be changed from sheer numbers to quality. Remove barriers that rob people in management and in engineering of their right to pride of workmanship.” – Deming  (12th point of business management)
    Treat people the way Harry recommends and you can expect them to leave !

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    #149477

    Hal
    Participant

    “I thought six sigma is teachable science.”
    You must be kidding !!!
    Science doesn’t enter into it … read all the papers on SS … all it’s “facts” are fabrications.

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    #149437

    Hal
    Participant

    You could start with the Cambridge Mental Institute to see who they have certified.

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    #149305

    Hal
    Participant

    Read “Normality and the Process Behaviour Chart”.
    It will give you a new (non normal) way of looking at processes.

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    #148589

    Hal
    Participant

    Readers will also notice the attempts at personal attack, when six sigma consultants like Stan are caught out preaching their nonsense.

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    #148588

    Hal
    Participant

    When six sigma’s failures are discussed and when the success of non six sigma companies like Toyota are discussed, I’m sure that intelligent readers here will notice the fear (terror ?) response from six sigma consultants like “No Child”.

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    #148420

    Hal
    Participant

    Slow driving, slow talking, slow thinking … a bit slow all around

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    #148419

    Hal
    Participant

    Bright eyes,
    Whats the difference between sigma in a six sigma table and sigma in control charts ?

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    #147801

    Hal
    Participant

    Bill Smith did not “discover” 1.5.  You can’t “discover” something that doesn’t exist.  Read his paper.  He pulls it out of thin air without reference or justification.

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    #147553

    Hal
    Participant

    Sounds about as useful as an udder on a bull … an MBA in BS

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    #147294

    Hal
    Participant

    It’s also quite a laugh how the ASQ promotes Wheeler in their six sigma refence list  http://www.6sigma.us/six-sigma-resources.php
    There is no way anyone could read Wheeler and still have a six sigma program.  Wheeler does a beautiful job of tearing six sigma to shreds.

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    #146975

    Hal
    Participant

    It’s no wonder that people are now calling it “Sick Sigma”.  You six sigma freaks really are sick.

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    #74380

    Hal
    Participant

    I know that my companies products are more reliable than in 1994 (not necessarily more safe!).
    Part of it is that we demand, and work with, our suppliers to provide higher quality, because our customers and competitors force us to do so.
    However, I smell litigation behind your question.  I am no lawyer, but if the question comes done to what was reasonable to expect in 1994, the answer may not be the same as today.
    Hal

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    #73259

    Hal
    Participant

    Carol,
    I amy be a minority but you do not speak for me.
    I do not agree with Mr Shelly, but all of us experience anti six sigma views in our work.  To hear these arguments here, and especially the counterarguments is useful.
    I do agree that some more positive postings would be desirable
    Hal
     

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Viewing 25 posts - 1 through 25 (of 25 total)