"No plan of operations extends with certainty beyond the first encounter with the enemy's main strength"
Helmuth Karl Bernhard von Moltke
This is an exercise we created in 2011 to introduce people to iterative product development.
The aim is to demonstrate the differences between upfront plans and short plans with frequent feedback. Helmuth (quoted above) was one of the first proponents of an iterative approach. He didn’t necessarily create grand plans, conversely he didn’t disregard planning altogether, but he was smart enough to plan just enough and adjust his plan to meet the changing reality.
You can download a copy of the exercise and instructions here.
Alternatively you can find our original post here.
You can also find online versions of the exercise, we particularly like this one.