Longevity: Designs that last. David D. Clark MIT CSAIL July, 2012. Background. The Internet has lasted a very long time, perhaps 35 years. Not as long as the phone system. Longer than most other IT artifacts. C: 1972 Unix: about 1969 We can argue about whether it is showing its age.
David D. Clark
Supports: the theory of the general network, the theory of the stable platform, the theory of semantics-free service, the theory of technology independence, the resulting theory of the hourglass, perhaps the theory of minimal global agreement, and (to some extent increasing over time) the theory of downloadable code (in the end-nodes).
Rejects: the theory of hegemony, and the theories of composable elements and downloadable code in the network.