Embrace, Extend, and Extinguish

This is probably the leading modern example of EEE: systemd.

It started from a faulty premise of blacklisting privilege for processes and resources.

Ideally, a process should be obtaining whitelist privileges.

At any rate, systemd is no longer a partitionable component where a sysadmin can pick and choose from the many components … in a true UNIX spirit: take it all or leave it.