https://cryptome.org/2015/12/anon-v-panopticon.pdf ''' We believe the vulnerabilities and measurability limitations of onion routing may stem from an attempt to achieve an impossible set of goals and to defend an ultimately indefensible position. Current tools offer a general-purpose, unconstrained, and individualistic form of anonymous Internet access. However, there are many ways for unconstrained, individualistic uses of the Internet to be fingerprinted and tied to individual users. We suspect that the only way to achieve measurable and provable levels of anonymity, and to stake out a position defensible in the long term, is to develop more collective anonymity protocols and tools. It may be necessary to constrain the normally individualistic behaviors of participating nodes, the expectations of users, and possibly the set of applications and usage models to which these protocols and tools apply. Toward this end, we offer a high-level view of the Dissent project, a “clean-slate” effort to build practical anonymity systems embodying a collective model for anonymous communication. '''