in reply to Premature optimization
Just as a point of reference a four-variable system for projects seems to usually be:
The list reminded me of a paper I wrote on NASA's "Bigger, Better, Cheaper", (They had their own problem with that in they implicitly excepted greater risk ;-)1. Schedule (development speed) 2. Performance (quality) 3. Cost (cost) 4. Risk
I suppose it might be possible (in some convuluted way) to map risk to scope ;-)
perl -pe "s/\b;([st])/'\1/mg"