I find it is sometimes useful to distinguish between the "hypothetical estimate" and the "practical estimate". Task X will take 2 weeks. Task X will take 2 we

I find it is sometimes useful to distinguish between the "hypothetical estimate" and the "practical estimate". Task X will take 2 weeks. Task X will take 2 weeks of development time and 6 weeks to test, validate, productionize and roll out. Task X would take 2 weeks if we drop everything else we're doing, but because we can't, it will take about 12-18 weeks to finish.