[hackerlight]

How is this relevant to the question of whether censorship is effective?

[gadflyinyoureye]

Because one measure of effectiveness can be equality of application.

[ovao]

Another measure might be the extent to which it leads to an unequal distribution of knowledge. Censorship can be seen as means of preventing misinformation, and sometimes quite effective at that, but a potential negative byproduct is limiting the output of (interpretable) factual information.