An icon is a symbol equally incomprehensible in all human languages An icon is a symbol equally incomprehensible in all human languages. There's a reason why humans invented phonetic languages. Jef Raskin, Steve Jobs iconographysymbols
All-use environments Until the nineteenth century, virtually all cities were “all use” environments. Craft-scale production was typically carried out in a workshop below the home of the craftsperson, which often also served as the site of exchange. Michael Sorkin, 20 Minutes in Manhattan Small economies productionwork