Design is not just what it looks like and feels like.
Design is how it works.
I think that without owning something over an extended period of time — like a few years — where one has a chance to take responsibility for ones recommendations, where one has to see ones recommendations through all action stages and accumulate scar tissue for the mistakes, and pick one self up off the ground and dust oneself off, one learns a fraction of what one can.
It’s really hard to design products by focus groups. A lot of times, people don’t know what they want until you show it to them.