And c) cryptography is important. Or maybe also, d) P2P and federation is important? (a) ensures, although only partially, the computing freedom of the user, (b

And c) cryptography is important. Or maybe also, d) P2P and federation is important? (a) ensures, although only partially, the computing freedom of the user, (b) ensures, although only partially, the computing power of the users, and (c) ensures, although only partially, the ability of the user to selective reveal information, and/or reserve control of them, when it's in hands of a 3rd-party. Unfortunately, even with (a), (b), and (c). I doubt if a general solution exists, as I said in https://news.ycombinator.com/item?id=19861630 https://news.ycombinator.com/item?id=19861630.