[jorjordandan]

Would like to mention the Quantum Thief trilogy by Hannu Rajaniemi. These books are very dense with interesting concepts. In one section, the people who live on Mars have a privacy organ that automatically blurs out all strangers unless they make an agreement to exchange information. There are 'agoras' where they are unprotected. The idea goes into the cultural ramifications of this, it's incredibly interesting reading, but does not hold your hand at all.