I read in !emc-pstc that Tania Grant <taniagr...@msn.com> wrote (in
<oe105nrrmqyirkou1wl00009...@hotmail.com>) about 'Sometimes product
safety just isn't enough', on Sat, 15 Dec 2001:
>    I see where you have drawn the line!   
>     
>    I can just see now the IEC rewriting the definition of users of 
>    60950 equipment as 1) trained servicepersons, 2) fools, and 3) all 
>    others.   The definition of fools would be mindless persons who 
>    ignore all instructions and logic.   Safety would be achieved, in 
>    addition to the usual compliance, by having users signing a paper 
>    when placing an order or purchasing equipment that they will read 
>    all instructions and agree to abide by the conditions of use placed 
>    on the equipment.   This document gets back to the manufacturer who 
>    files away this bureaucracy, to be retrieved when a fool tries to 
>    sue for hot coffee in their lap, or a tingle when drilling under 
>    rafters when standing on an aluminum ladder in the swimming pool.   
>    This would take care of the crazies who try to sue for any possible 
>    misuse of their brains.

I think that if I were marketing a product in USA, I would seriously
consider doing just that! And I bet my product-liability insurance
company would be very pleased if I did it!
>     
>    Seriously, I am all for protecting the innocent and uneducated 
>    user.   But the user should also be accountable for responsible use 
>    of equipment.   The problem is, how does one define that???

I'm not sure that 'responsible' is quite the right word in this context.
There is also the question of 'foreseeable misuse'; there is now a
requirement in some legislation for manufacturers to take this into
account, but I don't know of a definition of it!

I doubt if it's practicable to do better than to say, as a pair of
formal definitions (which I believe we NEED!):

Correct use:

Use in accordance with the manufacturers instructions, including the
obeying of all 'warning' and 'caution' notices.

Foreseeable misuse:

Use of, or activity involving, the product which does not violate the
manufacturer's instructions, or involve the ignoring of a 'warning' or
'caution' notice, but which is not intended by the manufacturer and may
result in damage or injury or both.

For example, the replacing of a user-accessible fuse by an incorrect
type is, I think, foreseeable misuse, simply because fuse specifications
are now so complex for the layman: 'F 1.6 A E 250 V'. Since it's at
least exceedingly difficult to ensure continued safety with a 'T 6.3 A L
32 V' fuse in this position (!), I think user-accessible fuses (i.e. no
tool required) have to go!


-- 
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk 
After swimming across the Hellespont, I felt like a Hero. 

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