  This paper argues that one of the most important decisions in designing and
deploying censorship resistance systems is whether one set of system options
should be selected (the best), or whether there should be several sets of good
ones. We model the problem of choosing these options as a cat-and-mouse game
and show that the best strategy depends on the value the censor associates with
total system censorship versus partial, and the tolerance of false positives.
If the censor has a low tolerance to false positives then choosing one
censorship resistance system is best. Otherwise choosing several systems is the
better choice, but the way traffic should be distributed over the systems
depends on the tolerance of the censor to false negatives. We demonstrate that
establishing the censor's utility function is critical to discovering the best
strategy for censorship resistance.
