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From: Ken Garlington <garlingtonke@lmtas.lmco.com>
Subject: Re: Software Safety (was: Need help with PowerPC/Ada and realtime
 tasking)
Date: 1996/06/07
Message-ID: <31B7E171.7144@lmtas.lmco.com>#1/1
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references: <d-struble.107.001A95C3@ti.com> <Ds6M4D.E09@world.std.com>
 <31AD794D.2E62@lmtas.lmco.com> <dewar.833504787@schonberg>
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organization: Lockheed Martin Tactical Aircraft Systems
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Date: 1996-06-07T00:00:00+00:00
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Norman H. Cohen wrote:

> Gries seemed to have in mind a model whereby the customer presents the
> software developer with a contract expressed in the form of formal
> specifications; if the software developer conforms to the specifications,
> he has fulfilled the contract, even if the customer doesn't get what he
> really wanted.

This sounds reasonable. Consider the example of someone buying a compiler,
and saying, "I want a compiler that passes the ACVC!" So, the vendor provides
such a compiler, and thus expects payment for completing the contract. Then,
the user says, "Wait a minute! The generated code is too slow! I'm not paying!"
I wouldn't conside that complaint sufficient to withhold payment, if execution 
performance wasn't part of the agreement...

-- 
LMTAS - "Our Brand Means Quality"