> Can you imagine if other professions adopted "agile" methodologies? Can you imagine your auto mechanic telling you, "Okay, well, putting the dashboard back on is going to take me until tomorrow, actually, but, if I only attach half the bolts and leave the speedometer disconnected, I can get it to you by the end of the day. Would that be all right?" Or a home-builder saying, "Okay, well, the drain pipes are proving trickier than anticipated to install, but I can give you the bathroom without the drain pipes, and install those in the "version 2.0" release. Would that be okay?"
You're talking about stuff that's a regression from the previous state of things, which is rather different. Where I live it's totally normal for a dentist to say "ok, I only had time to fill two teeth today, come back next week for the others". Or a tutor to say "ok, we'll stop there for today and finish the chapter next week". Or a cleaner to say "well I've got time to do the balcony or the fridge but not both, let me know which you want today and I'll do the other next week".