Design Thinking is an overarching philosophy executed through a structured method. The philosophy revolves around thinking like a designer: empathy for the end user, space for creativity, and the freedom to make mistakes and learn from them. The method consists of five phases: Empathize, Define, Ideate, Prototype, and Test. These are not fixed checklist steps; you constantly move back and forth until it works.
"In practice, I see projects getting stuck because people talk too much and don't make or test enough. As soon as you can make one idea tangible and present it to your audience, everything starts moving, and you save yourself from creating a large project that might completely miss the mark."
The philosophy and the method
Design Thinking consists of two layers. The first layer is the philosophy, the mindset. Its core is thinking like a designer: empathy for the end user, embracing creativity, and accepting that you can make mistakes and learn from them.
The second layer is the method. This is the practical process that consists of five fixed phases: Empathize, Define, Ideate, Prototype, and Test. Both layers belong together: without the human-centered mindset, the method becomes an empty step-by-step plan; without the method, the mindset remains non-committal.
The five phases
Design Thinking is an iterative approach in which you solve complex problems by continuously learning from your users. The method consists of five phases:
Empathize
Truly understand your target audience through interviews, observations, and conversations.
Define
Formulate a clear problem definition based on your insights.
Ideate
Generate as many ideas as possible, without judgment, from multiple perspectives.
Prototype
Create a tangible, simple version of an idea.
Test
Try out the prototype with real users and learn from their feedback.
Important: these phases are not a linear checklist. You constantly move back and forth until it works.
Why Design Thinking works
What makes the method powerful is the principle of radical empathy. Instead of coming up with solutions based on policies or assumptions, you start with the person behind the problem and keep returning to them. The result: solutions that are not only more creative but also more relevant and sustainably applicable.
No ready-made answers, but more insight
Still, Design Thinking is not always easy. It requires letting go of control, linear plans, and familiar structures. That can be exciting and sometimes frustrating.
The background of Design Thinking
In the 1990s, the American design agency IDEO (opens in new tab) became world-famous. They worked on smart products like the first computer mouse for Apple. IDEO was known for their creative approach, always starting with the people for whom they were designing. Founder David Kelley called this Human-Centered Design. It revolves around listening, observing, and understanding what users really need. Not what they say they want, but what they encounter in practice.
The five steps of Design Thinking
At Stanford University, David Kelley founded the d.school in 2004. There, Design Thinking became a teaching method with five fixed steps: Empathize (understanding the user), Define (formulating the problem sharply), Ideate (generating ideas), Prototype (making ideas tangible), and Test (testing and improving).
This clear approach enabled people without a design background, such as managers, teachers, or civil servants, to work with it.
Design Thinking for major changes
The history of Design Thinking has continued in recent years as it is increasingly used for major societal challenges, such as sustainability, healthcare, poverty, or climate. It is not just about new products or services but about changing systems and collaboration. Organizations use Design Thinking to help people within the organization grow in personal leadership, collaboration, and adaptability. This way, change is not imposed from above but built from within.
Design Thinking started as a design method for products, grew into a teaching method for everyone without a design background, and is now being used for major societal challenges. The common thread remains the same: start with the human, accept that it is not a straight line, and learn as you go.
More articles per topic
