At #hsse2012 @rjglushko substituting information for interactions, amongst and between (1) people, (2) computational agents in a conceptual architecture for service system design. Learning system includes a service model manager (with a service ontology because services are related). Front stage people want to design for interaction, but may not be necessary given back stage infrastructure. Article in 6th cycle of review for JSR. http://people.ischool.berkeley.edu/~glushko/