Johannes Kähm

There is lots of value in the previous comments. For me it's a three-step approach: 1. qualitative interviews and observation: take your time to understand some users/ customers and their problems. Talking to a real person for 15 minutes will be worth 15 days of online research. 2. quantitative hypothesis validation: try to invalidate the hypothesis you have after step 1. If you fail: it's a...