Design thinking goes like this: firstly, immersion, whereby the designers research the problem by plunging themselves into it – talking to the people they're trying to help, working with them, interviewing experts. Secondly, synthesis – whereby they gather together their findings and look for patterns. Third, ideation – brainstorming solutions to the real problems identified by stage two. Then comes prototyping, making mock-ups of solutions to try out against the problem. After that comes the product. Only at the end, at the prototyping stage, are judgments made; until then, all ideas are given equal weight.
… design thinking places the designer at the heart of the innovation process… the methodology gives a firm framework within which a wider team can work. It takes the cliché of the lone creative mind being struck with genius, and replaces it with a process that a whole team can follow. Creativity, therefore, isn't a thing that magically appears, but a process you work through.
Source: here