Despite the recent wave of interest in the social and physical sciences reg
arding "complexity," relatively title attention has been given to the logic
al foundation of complexity measurement. With this in mind, a number of fai
rly simple, "reasonable" axioms for the measurement of network complexity a
re here presented, and some of the implications of these axioms are conside
red. It is shown that the only family of graph complexity measures satisfyi
ng the "reasonable" axioms is of limited theoretical utility, and hence tha
t those seeking more interesting measures of complexity must be willing to
sacrifice at least one intuitively reasonable constraint. Several existing
complexity measures are also described, and are differentiated from one ano
ther on an axiomatic basis. Finally, some suggestions are offered regarding
future efforts at measuring graph complexity.