What is easier to decide, building a nuclear reactor or building a bicycle shed? Why do photographers put moles on models’ faces? Should you trust a designer acting on a hunch? Should you trust any individual at all or should you go for the wisdom of crowds? Or decide based on guidelines? I'll talk about such things, or something very similar. I haven't really decided yet. This is the deck from my Pantalk in Zürich on 19.03.2015: http://www.meetup.com/Pantalks-tech-non-tech-talks-Panter-AG-Zurich/events/220726097/