From owner-freebsd-hackers  Tue Jun 13 11:10:36 1995
Return-Path: hackers-owner
Received: (from majordom@localhost)
          by freefall.cdrom.com (8.6.10/8.6.6) id LAA00354
          for hackers-outgoing; Tue, 13 Jun 1995 11:10:36 -0700
Received: from emory.mathcs.emory.edu (emory.mathcs.emory.edu [128.140.2.1])
          by freefall.cdrom.com (8.6.10/8.6.6) with SMTP id LAA00348
          for <hackers@freefall.cdrom.com>; Tue, 13 Jun 1995 11:10:34 -0700
Received: from bagend.UUCP by
	emory.mathcs.emory.edu (5.65/Emory_mathcs.4.0.14) via UUCP
	id AA17924 ; Tue, 13 Jun 95 14:09:46 -0400
Received: by bagend.atl.ga.us (Smail3.1.29.1 #1)
	id m0sLZdF-0006SmC; Tue, 13 Jun 95 13:20 EDT
Message-Id: <m0sLZdF-0006SmC@bagend.atl.ga.us>
From: jan@bagend.atl.ga.us (Jan Isley)
Subject: Re: Problem with 2940 SOLVED
To: rgrimes@gndrsh.aac.dev.com (Rodney W. Grimes)
Date: Tue, 13 Jun 1995 13:20:04 -0400 (EDT)
Cc: taob@gate.sinica.edu.tw, evanc@synapse.net, hackers@freefall.cdrom.com
In-Reply-To: <199506130530.WAA05290@gndrsh.aac.dev.com> from "Rodney W. Grimes" at Jun 12, 95 10:30:53 pm
X-Mailer: ELM [version 2.4 PL24]
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Content-Length: 900       
Sender: hackers-owner@FreeBSD.org
Precedence: bulk

Rodney W. Grimes wrote:

> As a person who has been around the computer manufacturing business
> for most of my life working with every thing from silicon processes
> to final system testing I have found that over 80% of all computer
> eletronic failures can be traced to ``conection failure'' weither
> it be at the micron level inside a chip, or macro level from a
> cable left unplugged :-) :-)

In a previous incarnation I did Survivability Engineering and worked
on the VHSIC (very high speed ic) program at Westinghouse.  The Navy
had a continuing study at the time that had run for many years.  They
determined that 'connection failures' accounted for ... okay, it has
been 12 years, so don't quote on this okay ... but I recall that they
said 94% +/- about 5%.
-- 
Jan Isley            | If you couldn't find any weirdness,
jan@bagend.atl.ga.us | maybe we'll just have to make some! - Hobbes