In the situation where the team didn't agree with a reestimate, but thought they could "catch up" and get back on the schedule from the previous estimate, we said you keep "both curves"--the expected progress over time from the previous estimate, and the expected progress over a presumably longer time from the new estimate (I guess it could be a shorter time and the team doesn't think they can sustain the high productivity they have shown so far). Arthur Ryman asked whether there is a third curve, that shows what progress is needed over time to start where we are now, and catch up to the previous estimate, say within the next six months. If we had that, we could then see if we're tracking to it and whether the idea we can catch up is realistic, or should we accept the newer estimate.

So the question is, how do we tell if we're "catching up" appropriately?

Galorath contribution

QSM contribution

Anyone else, please add additional document