As a user of services, I do want control. Whether my privacy needs are met is not good enough unless mathematically guaranteed, and even then there are social/i

As a user of services, I do want control. Whether my privacy needs are met is not good enough unless mathematically guaranteed, and even then there are social/integration features that may add side channels that require control. An example of such a feature would be Signal requesting your contact list to find out whom, among your friends, is also using Signal (which isn't too horribly an anti-pattern in this case because the app still works without read access to your contacts). Why? Because I want to be able to revoke access to any of several specific details about me or my device based solely on whether I feel like it. As soon as this is taken for granted, it is devalued and users lose leverage. Then the conversation during development becomes whether a proposed new feature is "worth" an encroachment on user privacy.