TestDesirability, Feasibility, Viability
Score the concept on whether people want it, whether you can make it and whether it can pay its way, then test the weakest first.
Concepts usually fail on one of three counts: nobody wanted it, it couldn't be built, or it couldn't pay its way. Teams tend to test the count they are most comfortable with, so engineers prototype and marketers survey. Scoring all three side by side shows where the real risk sits.
How to use it
- Write three questions. Desirability: do the people we serve want this? Feasibility: can we build and deliver it? Viability: should we, given the money and our goals?
- Under each, list the two or three biggest unknowns.
- Score each lens from 1 to 5 for how much evidence you have, not how confident you feel.
- Pick the lowest score and design the next test for it on a Test Card.
- Re-score after every test. Move on when no lens is a clear weak spot.
Example
A hospital team's idea for remote follow-up calls scores high on feasibility, middling on desirability and low on viability: nobody knows who would fund the staff time. They talk to finance before anyone builds anything.
Watch out
- Averaging the scores. A concept with two fives and a one is still a one.
Write the unknowns as Leap of Faith Assumptions; answer feasibility questions with a Feasibility Spike.