John VanSickle wrote:

> The real problem with putting software on a schedule is that during 
> development a program is being written for the first time, and for that 
> reason nobody really *knows* how long it will take.  Sure, the boss can 
> guess how long it will take, based on experience with similar projects, 
> but at the very best he/she is making an educated guess.

Indeed.

Mind you, arguably the same principle applies any time anybody designs a 
new product. How long does it take to design and build a house? Well, 
you can take an educated guess, but...

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