The six layers of buildings. The following list runs from the inside out, from short halflife to long halflife: stuff, space plan, services, skin, structure, site. Makes me think of two things. Firstly, the Long Now Layers of Time. Secondly, aren't these building layers just an extension of human coatings? Couldn't we go in from stuff to clothes, attitude, speaking, eye contact? And aren't all of these just mechanisms of communicating through the media (aether) that also-just-happens-to-be the universal aether (media), that is: geography, aka Real Life? The extended phenotype as message.