Demo's (Design-Fiction Laboratory) book, organised by professors and researchers Daniel B. Portugal, Wandyr Hagge and Leonardo Kussler, is entitled Quando fazer é pensar. The book brings together original texts and translations that are relevant to connecting Design to various fields in the Humanities, especially Philosophy. Uniting the various productions that make up the work is a suspicion of the separation between thinking and doing, which, with a few breaths, has survived from Antiquity to Modernity and has taken root in common sense.