Talk given at the 'playground meeting' of the Delft Design for Values (DDFV) Institute of 15 March 2018. Playground meetings are our informal lunch meetings for discussing DDFV projects, plans and challenges. Presenter is dr. Pieter Vermaas, executive director of the DDFV Institute and working at the philosophy section of Delft University of Technology. More info on the meeting: http://designforvalues.tudelft.nl/2018/values-never-conflict-only-practices-do/