As far as I can see, the inevitable result of having several differentroot passwords across your systems is that a smart intruder whocompromises /bin/su on a single system will sooner or later collect all your root passwords.

(Or perhaps other people are better than we are at typing the right rootpassword at the current Password: prompt.)

(Please do not suggest sudo as the solution. For a start, we'd stillwant actual root passwords that are distinct from our own passwords.)

From a blog entry on the problem of email spam:

Charging even $0.0001 per message would make spam uneconomic, but aswith signing and other proposals, it seems socially infeasible.

There is a widespread attitude among computer people that it is a greatpity that their beautiful solutions to difficult technical challengesare being prevented from working merely by some pesky social issues,and that the problem is solved once the technical work is done.This attitude misses the point, especially in system administration:broadly speaking

One of the common suggestions for fixing the email spam problem isto charge a small (often nominal) fee for email. Ignoring all of theproblems with implementing such a scheme, and ignoring all of the peoplewho would be violently against it, we can ask an important question:would it actually work?

Let's turn that around and ask the reverse question: has charging forpaper mail stopped paper mail spam? Clearly the answer is no; mostpeople get lots of junk mail, despite the senders having