Here is something that I do not understand: why is it always that theoldest and most clapped-out set of displays that you have is always tobe found in the machine room, barely working at the best of time?

Yes, I can see the surface logic; machine room displays are probablyyour least used displays and they spend a great deal of time doingnothing. But every so often you have a crisis and then you really needthem to work, because in a crisis the last thing you have

I wrote before about the limitations of hashes as privacy protectors , which leaves us with a notentirely theoretical question: suppose that you have to create atraffic accounting system, but you don't want to keep too much logs . What's the best way to protect user privacy in thissituation?

Our answer is to drop the first octet of the IP address. This givesmuch better privacy protection than dropping the last octet or eventhe last two octets, because it cuts against how IP address space isorganized