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<p>On 14/09/2020 15:48, Derek M Jones wrote:<br>
</p>
<blockquote type="cite"
cite="mid:a86dfaca-7d95-c1fe-61f4-51cf24707293@knosof.co.uk">Martyn,
<br>
<br>
<blockquote type="cite" style="color: #000000;">.... Bev's
<br>
paper on "How reliable is a program that has never failed?"
offers a
<br>
useful rule-of-thumb: that aften n hours of fault free
operation, there
<br>
is about 50% chance of a failure in the following n hours
(subject to
<br>
some obvious constraints).
<br>
</blockquote>
<br>
Is this the only (bit) useful theory paper from years past that
has stood
<br>
the test of time?
</blockquote>
<p>No, of course not - what an odd question. There are many dozens
in software reliability and many thousands in other areas of
theory. <br>
</p>
<p>Martyn<br>
</p>
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