also needed: analyses of causes of damage no rigorous study exists of root causes of Internet performance problems/outages. anecdotal survey (courtesy sean donelan nanog post): 1. network engineers (what's this command do?) 2. power failures (what's this switch do?) 3. cable cuts (backhoes, enough said) 4. hardware failures (what's that smell?) 5. congestion (more bandwidth! Captain, I'm giving you all she's got!) 6. attacks (malicious, you know who you are) 7. software bugs (your call is very important to us....) // ``I prefer the wicked rather than the foolish. the wicked sometimes rest.'' - alexandre dumas //