Many schools of thought fed our thinking and pointed to this model: industrial symbiosis, performance economy, sharing economy, biomimicry, and of course, cradle-to-cradle design.
Mnoge škole mišljenja su podržale naše  razmišljanje i uputile na taj model: industrijska simbioza, ekonomija izvedbe, ekonomija dijeljenja, biomimikrija, i naravno, dizajn podloga-do-podloge.