A critic of Guido's blog on Python's lambda

[Rob Warnock]

Ken Tilton  <kentilton at gmail.com> wrote:
+---------------
| Having the reference implementation is the only thing that makes this 
| conceivably doable in a summer. What you are missing is something I have 
| often also gotten wrong: the core, cool functionality always comes easy 
| in the proof-of-concept stage. We make these ridiculous extrapolations 
| from that to a shipped product and come in five times over budget.
+---------------

Or as Fred Brooks said it in "The Mythical Man-Month" [paraphrased],
if a program takes one unit of effort, a programming *system* takes
three units of effort, and a programming systems *product* takes nine
units of effort.


-Rob

-----
Rob Warnock			<rpw3 at rpw3.org>
627 26th Avenue			<URL:http://rpw3.org/>
San Mateo, CA 94403		(650)572-2607