My opinion on this is no, personas are largely overvalued, and might not bring the benefits that are expected. I’ve seen companies spending a huge amount of money to create personas that nobody ever looked at. When Alan Cooper introduced personas in his book The lunatics are running the asylum, he described a completely new [...]
These are in my opinion the most important requisites for great design solutions: 1. Create a list of activity-centered requirements and test any design solution against each of them 2. Prototype the solutions you wish to implement before you create them 3. Test with real users throughout the design and development lifecycle, following an iterative [...]