1. Understand the market, the client, the technology, and the perceived constraints on the problem. Later in a project, we often challenge those constraints, but it's important to understand current perceptions.
2. Observe real people in real-life situations to find out what makes them tick: what confuses them, what they like, what they hate, where they have latent needs not addressed by current products and services.
3. Visualize new-to-the-world concepts and the customers who will use them. Some people think of this step as predicting the future, and it is probably the most brainstorming-intensive phase of the process. Quite often, the visualization takes the form of a computer-based rendering or simulation, though IDEO also builds thousands of physical models and prototypes every year. For new product categories we sometimes visualize the customer experience by using composite characters and storyboard-illustrated scenarios. In some cases, we even make a video that portrays lilfe with the future product before it really exists.
4. Evaluate and refine the prototypes in a series of quick iterations. We try not to get too attached to the first few prototypes, because we know they'll change. No idea is so good that it can't be improved upon, and we plan on a series of improvements. We get input from our internal team, from the client team, from knowledgeable people not directly involved with the project, and from people who make up the target market. We watch for what works and what doesn't, what confuses people, what they seem to like, and we incrementally improve the product in the next round.
5. Implement the new concept for commercialization. This phase is often the longest and most technically challenging in the development process, but I believe that IDEO's ability to successfully implement lends credibility to all the creative work that goes before.
The Art of Innovation, by Tom Kelley with Jonathan Littman
