Re: Nikon Acknowleges Banding, Sort Of

["dickbo" <dickbo@xxxxxxxxxxxxxxx>]

Who said anything about problems squire. I was talking about faults and
their allocation.

----- Original Message -----
From: <rafe.bustin@verizon.net>
To: <scan@leben.com>
Sent: Friday, April 12, 2002 8:30 PM
Subject: Re: Nikon Acknowleges Banding, Sort Of


> On 12 Apr 2002 at 15:41, dickbo wrote:
>
> > I would submit to you the idea that there is no such thing as an
> > intermittent "Design" problem in that the fault will not be found in the
> > design but somewhere else such as a single or machine batch component
fault
> > or even a test procedure shortcoming.
> >
> > Of course it might just be a user failing, but God forbid the paying
> > customer could ever be at fault.
>
>
> As an engineer (25+ years) I have seen my share of products/
> designs used in ways that I'd not planned for, or clearly in violation
> of suggested operating procedures or parameters.  Notwithstanding,
> what you say just isn't so.
>
> Either that, or you're just playing with semantics.  Testing is
> done (in part) to find and root out engineering problems.  If
> it fails to do that, is it a failure of the testing?  Maybe.  But it
> is still an engineering problem, at the root.
>
> Products fail in myriad ways.  Sometimes components fail,
> sometimes the design's at fault.  Sometimes it's a combination
> of the two:  the design pushes a component into an area of
> operation for which it was not properly tested or qualified for
> use.  Perhaps the resistor was dissipating more power than
> it was rated for.  Perhaps the ESR rating of the capacitor wasn't
> properly observed.  Perhaps the component (whatever it is)
> is being used in a way that it's creators/designers never
> anticipated.  The possibilities (for error) are endless.
>
> Firmware fails for exactly the same reasons:  some combination
> of factors pushes the code into a region that was never properly
> tested.  For some users, the code doesn't fail.  For others, it does.
> Testing may or may not reveal the flaw.
>
> If you were correct, Dickbo, there'd be no need for the Consumer
> Products Safety Commission, or the thousands of recalls of
> consumer products in the USA, each year.
>
> I'm not sure what you're implying here, about the specific
> issue.  Are you suggesting that Lawrence Smith, and I, and
> others, have somehow brought on the banding problem through
> our own misuse of the product?
>
> Are you suggesting that the space shuttle "Challenger" was brought
> down through anything other than an intermittent design problem?
> Or would you prefer to call that a failure of testing?  Either way, I
> say it as a classic (and tragic) engineering problem -- exacerbated,
> as usual, by economics and politics.
>
>
> rafe b.
>
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