scarcity when not enough of the resources are available to satisfy all the various ways a society wants to use them opportunity cost what you must give up in order to get an item; i.e. its true cost all costs are ultimately opportunity costs ...
All business models that depend on physical scarcity (used to be cd’s for music) could be at threat if 3d printing keeps improving in the coming years, and the internet is still capable of spreading information (defcad for example) freely. Will all those kind of businesses adapt quickly to...