Rumble or all-in-one If you have more than one winning solution, involve the whole team in a short discussion about whether to do a Rumble or combine the winners into a single prototype. Typically, this decision about format is easy. If it’s not, you can always ask the Decider to make the call. Now, if you decide to do a Rumble, you’ll have one more small problem. If you show your customers two prototypes of the same product, you risk sounding like an optometrist: “Which version do you prefer? A, or B? A? Or B?”I Luckily, the resolution to this murky situation is easy, and even fun: You get to
...more
