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The political correctness issue doesn't bother me
too much. What does bother me
is that the meaning of master and slave in a
computing context is often learned
by experience, rather than being indicated by the
definition of the terms.
Further, the exact meaning of master and slave can
vary widely from application
Does the master actually control the slave's
appearance or behavior in an active
way? Will changing the master automatically change
the slaves? Is the master
indistinguishable from the slave except by arbitrary
Here are some possible alternatives:
Control copy and work copy
Master and clone
Original and duplicate
Source and reflection
Primary and secondary