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From: aek@vib.usr.pu.ru (Alexander Kopilovitch)
Newsgroups: 
 comp.lang.java.advocacy,comp.object,comp.lang.ada,comp.software-eng
Subject: Re: Quality systems (Was: Using Ada for device drivers? (Was: the Ada
 mandate, and why it collapsed and died))
Date: 16 May 2003 17:42:46 -0700
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Date: 2003-05-17T00:42:46+00:00
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"Robert I. Eachus" <rieachus@attbi.com> wrote in message news:<3EC539FA.1040500@attbi.com>...
> soft-eng wrote:
> 
> > Other times are when the bug is very intermittent
> > and cannot be duplicated and you have to proceed
> > blindly, based on theories that are sometimes half-baked.
> 
> We call those Heisenbugs.  Converting a Heisenbug to a Bohrbug that you 
> can reproduce is often the first part of fixing the problem.
 
Perhaps it would be more accurate to use slightly softer name Schrodbugs,
reserving the name Heisenbugs to those particularly wicked ones, which
disappear at any attempt to investigate/localize them either using debugger
or inserting printouts.


Alexander Kopilovitch                      aek@vib.usr.pu.ru
Saint-Petersburg
Russia