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Re: fix(4.70*100) is... 469 [message #53543 is a reply to message #53540]

Thu, 19 April 2007 11:15

mmeron
Messages: 44
Registered: October 2003

Member

In article <MPG.20916bc4bfdc7a43989f4c@news.frii.com>, David Fanning <news@dfanning.com> writes:
> David Fanning writes:
>
>> I don't think there is anything "wrong" about your
>> assumption, except that it doesn't reflect reality.
>> This is how most of us go wrong with assumptions.
>> We assume something is so that ain't so. :-)
>
> Just to enlarge on this a bit, after poor typing
> skills, incorrect assumptions probably makes up
> the largest percentage of "bugs" in software. If
> you hear someone shouting "I don't f---ing
> believe this!", you can be almost certain an
> assumption is going to come crashing down.
>
> In general, there are better outcomes when our
> assumptions closely model reality than when they
> do not. In this particular case, if your assumption
> is "floating point math on computers can drive you
> crazy", then you are likely to make fewer mistakes
> than if your assumption is "computers always do
> what I expect them to do."
>
In other words, "an ounce of paranoia saves a pound of debugging".

Mati Meron | "When you argue with a fool,
meron@cars.uchicago.edu | chances are he is doing just the same"

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[Message index]

		Re: fix(4.70*100) is... 469 By: b_efremova@yahoo.com on Thu, 19 April 2007 11:47
		Re: fix(4.70*100) is... 469 By: mmeron on Thu, 19 April 2007 11:15
		Re: fix(4.70*100) is... 469 By: b_efremova@yahoo.com on Thu, 19 April 2007 11:13
		Re: fix(4.70*100) is... 469 By: David Fanning on Thu, 19 April 2007 12:07
		Re: fix(4.70*100) is... 469 By: David Fanning on Thu, 19 April 2007 11:52
		Re: fix(4.70*100) is... 469 By: b_efremova@yahoo.com on Thu, 19 April 2007 10:44
		Re: fix(4.70*100) is... 469 By: b_efremova@yahoo.com on Thu, 19 April 2007 10:03
		Re: fix(4.70*100) is... 469 By: mmeron on Thu, 19 April 2007 10:00
		Re: fix(4.70*100) is... 469 By: mmeron on Thu, 19 April 2007 09:50
		Re: fix(4.70*100) is... 469 By: David Fanning on Thu, 19 April 2007 09:54
		Re: fix(4.70*100) is... 469 By: Paolo Grigis on Fri, 20 April 2007 01:04
		Re: fix(4.70*100) is... 469 By: Jean H. on Thu, 19 April 2007 08:35
		Re: fix(4.70*100) is... 469 By: David Fanning on Thu, 19 April 2007 09:35
		Re: fix(4.70*100) is... 469 By: Christopher Thom on Thu, 19 April 2007 08:21
		Re: fix(4.70*100) is... 469 By: eddedmondson on Thu, 19 April 2007 08:13
		Re: fix(4.70*100) is... 469 By: Paolo Grigis on Thu, 19 April 2007 08:02
		Re: fix(4.70*100) is... 469 By: b_efremova@yahoo.com on Thu, 19 April 2007 07:41
		Re: fix(4.70*100) is... 469 By: b_efremova@yahoo.com on Thu, 19 April 2007 07:32
		Re: fix(4.70*100) is... 469 By: David Fanning on Thu, 19 April 2007 07:48
		Re: fix(4.70*100) is... 469 By: David Fanning on Thu, 19 April 2007 07:42
		Re: fix(4.70*100) is... 469 By: KRDean on Thu, 19 April 2007 06:41
		Re: fix(4.70*100) is... 469 By: Paolo Grigis on Thu, 19 April 2007 01:13
		Re: fix(4.70*100) is... 469 By: mmeron on Wed, 18 April 2007 22:56
		Re: fix(4.70*100) is... 469 By: Qing on Wed, 18 April 2007 21:38
		Re: fix(4.70*100) is... 469 By: Qing on Wed, 18 April 2007 21:36
		Re: fix(4.70*100) is... 469 By: Qing on Wed, 18 April 2007 21:31
		Re: fix(4.70*100) is... 469 By: Jean H. on Wed, 18 April 2007 17:58
		Re: fix(4.70*100) is... 469 By: mmeron on Wed, 18 April 2007 17:14
		Re: fix(4.70*100) is... 469 By: Jean H. on Wed, 18 April 2007 16:48
		Re: fix(4.70*100) is... 469 By: David Fanning on Wed, 18 April 2007 17:12
		Re: fix(4.70*100) is... 469 By: mmeron on Fri, 20 April 2007 00:33
		Re: fix(4.70*100) is... 469 By: Qing on Thu, 19 April 2007 23:43
		Re: fix(4.70*100) is... 469 By: Paul Van Delst[1] on Thu, 19 April 2007 12:06

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