A properly designed and implemented accelerated ageing test will highlight
the products in a class with poor results.  

It sure showed up the vulnerability of the cheap CD brands when compared
with gold discs. The results were quickly confired in real life.

Steve Smolian

-----Original Message-----
From: Association for Recorded Sound Discussion List
[mailto:[log in to unmask]] On Behalf Of Tom Fine
Sent: Friday, August 26, 2011 9:49 AM
To: [log in to unmask]
Subject: Re: [ARSCLIST] Rép. : Re: [ARSCLIST] New long lastin g DVD

The fallacy of all this age-claim stuff is that they test under known and/or
current conditions. How can anyone project what the conditions will be as we
get a couple of centuries out? What if a comet hits and toxifies the
atmosphere? What if there's a nuclear or chemical conflagration? What
man-made chemical compound is 1000 years old? So how does anyone know
exactly what happens with a chemical compound centuries from now? I think
it's dumb to even try and make claims of hundreds of years, but OK to say
"reasonable testing conditions (spelled out in detail so as to withstand
scrutiny) tell us that this device and its component compounds should
operate to current specifications for XX decades" with an outside cap of 100
years or so. And even then, all sorts of caveats should be included about
potential atmospheric changes, ideal storage conditions and the possibility
that they won't be possible within this timeframe, etc. I have no belief in
any claims of semi-permanence for any complex technology-driven device or

-- Tom Fine

----- Original Message -----
From: "Robert Richard" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, August 26, 2011 9:29 AM
Subject: [ARSCLIST] Rép. : Re: [ARSCLIST] New long lastin g DVD

> Birch Bark manuscripts, Novgorod (Russia), dating back to the 15th:
> Robert.
>>>> Lou Judson <[log in to unmask]> 2011-08-25 20:19 >>>