1. What is a network effect?
2. Monopoly provision of a network service
3. Characteristics of the network industry
   1. Critical mass
   2. Sub-optimal network size
4. Competing technology standards
5. Public policy concern: technology lock-in
6. Examples of path dependency
   1. Betamax vs VHs
   2. Qwerty keyboard
   3. Sony's blue-ray vs Toshiba's HD DVD
7. Critical evaluation of technology lock-in