"The game ain't over 'til it's over." - Yogi Berra
Baseball season is here and with apologies to the late Mr. Yogi Berra, “it’s like déjà vu all over again.”
Why would a project team or program management office (PMO) take the time and spend the resources to collect information about a project that was just completed? Isn’t this the time when victory is declared and everyone runs for the hills? In many cases, delving into what happened and what actual costs and durations were incurred can seem like an exercise in self-flagellation.
Historical data is arguably the most valuable input available in the software estimation process. While other inputs such as size and available duration or staffing can be seen as constraints, properly collected historical data moves the activity from the realm of estimating closer to “factimating.”