Re: ??? (was RE: A simple guy with a simple problem)

[david barnes <d.d.barnes@ic.ac.uk>]

as they said at nasa:
	simple, faster, cheaper
	choose two

Bullard, Claude L (Len) wrote:

> Which occurred during the Golden era (daniel golden) 
> of cheaper, simpler, faster.  They tried to XP 
> a complex craft and made a bad mistake in the 
> rush.  
> 
> Oopsie.
> 
> The shuttle has five computers.  Computers 
> don't help if you launch with ice hanging off 
> engines with exposed creases sealed with rubber.
> 
> Oopsie.
> 
> Simplicity is good by itself.  Speed is good 
> if you are in a safe passage.  Put them together 
> and pray your luck hopes outs.  If it doesn't... 
> oh well.  Hit the wall and let your family 
> wish you had a harness on at the funeral.
> 
> Oopsie.
> 
> XP has been tried.  It has its problems too. 
> The big one is:  competence.  To get around 
> that, QA.  Failover to another system.
> 
> QA is not a good practice; it is an absolute 
> cost of doing business.
> 
> Len 
> http://www.mp3.com/LenBullard
> 
> Ekam sat.h, Vipraah bahudhaa vadanti.
> Daamyata. Datta. Dayadhvam.h
> 
> 
> -----Original Message-----
> From: Danny Ayers [mailto:danny@panlanka.net]
> 
> 
> 
> I thought NASA had it pretty well sussed with the computers on the shuttle
> (this might be apocryphal) - 3 systems running, if two agree then that's
> your answer. But then of course there was that business about metric and
> imperial units on the way to Mars...
> 
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David DS Barnes
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