**"John Doyle"**

**Slide 2**

**Slide 3**

**Convergent networking: the
promise**

**Convergent networking: the
reality**

**Elements of systems**

**Two great abstractions of
the 20**^{th} Century

**Tower of Babel**

**Biology and advanced
technology**

**Communications and computing**

**Slide 11**

**Slide 12**

**"From"**

**Theoretical foundations**

**Uncertainty management**

**Control theory**

**Information theory**

**Computation complexity**

**Software correctness**

**Multiscale physics**

**Unified theory of
uncertainty management**

**Progress**

**Bonus!**

**Slide 24**

**Web/internet traffic**

**Slide 26**

**Slide 27**

**Slide 28**

**Slide 29**

**Slide 30**

**Slide 31**

**Slide 32**

**Slide 33**

**Slide 34**

**Slide 35**

**Slide 36**

**Slide 37**

**Slide 38**

**Slide 39**

**Slide 40**

**Robustness of HOT systems**

**Large scale phenomena is
extremely non-Gaussian**

**Slide 43**

**Slide 44**

**Slide 45**

**Slide 46**

**The physics view**

**Slide 48**

**Slide 49**

**Slide 50**

**Slide 51**

**The HOT view of power
laws**

(w/ Jean Carlson, UCSB)

**The HOT view of power laws**

**HOT and fat tails?**

**Examples of HOT fat tails?**

**Examples with additional
mechanisms?**

**Slide 57**

**Slide 58**

**Slide 59**

**Slide 60**

**Slide 61**

**Slide 62**

**Slide 63**

**Slide 64**

**Slide 65**

**Slide 66**

**Slide 67**

**Slide 68**

**Source coding for data
compression**

**Source coding for data
compression**

**Shannon coding**

**Shannon source coding**

**Slide 73**

**Slide 74**

**Coding = building barriers**

**Control = building barriers**

**Slide 77**

**"Compressed files look
like white..."**

**Slide 79**

**Slide 80**

**Why is this a good model?**

**Web layout as generalized
“source coding”**

**A toy website model**

(= 1-d grid HOT design)

**Slide 84**

**More complete website
models**

(Zhu, Yu, Effros)

**Generalized “coding”
problems**

**PLR optimization**

**Slide 88**

**Slide 89**

**PLR optimization**

**PLR optimization**

**Slide 92**

**Slide 93**

**Slide 94**

**Slide 95**

**Slide 96**

**Slide 97**

**Slide 98**

**Slide 99**

**Slide 100**

**Slide 101**

**Slide 102**

**More complete website
models**

(Zhu, Yu, Effros)

**The broader Shannon
abstraction**

**What can we keep?**

**Slide 106**

**Slide 107**

**Slide 108**

**Slide 109**

**Slide 110**

**Slide 111**

**Slide 112**

**Slide 113**

**"Two types of
application traffic..."**

**"Separate source and
channel coding"**

**"Packet loss can be
handled..."**

**Optimization/control
framework**

**Optimization/control
framework**

**Optimization/control
framework**

**Scalable Congestion Control**

**Robustness,
evolvability/scalability, verifiability**

**Robustness of HOT systems**

**Feedback and robustness**

**The Internet hourglass**

**The Internet hourglass**

**Slide 126**

**Slide 127**

**Slide 128**

**Slide 129**

**Slide 130**

**Slide 131**

**Slide 132**

**Slide 133**

**Slide 134**

**The hourglass**

**Energy**

**Slide 137**

**Slide 138**

**Slide 139**

**Slide 140**

**Slide 141**

**Slide 142**