Having been vaguely familiar with the idea of seasteads (city-states built on platforms in the ocean) since the late 90s, I was a long time skeptic before reading this book. After having read it, I have a whole new outlook on the possibilities of seasteading and its ultimate viability.
It may sound fantastical for thousands or even millions of people to leave the solid land they've inhabited since the beginnings of humanity. But Quirk and Friedman make the argument that it may be the only way to in fact save humanity. And even if you're not an apocalyptic doomsdayer, the idea of seasteading has something for everyone who cares about any aspect of the world. Whether the primary concern of the reader is CO2 emissions, the food supply, imminent water shortage, rising sea levels, the energy grid, global poverty, or civil liberties, apparently seasteading has got you covered.
To some extent, _Seasteading_ does ask for a leap of faith. After all, we still for the most part, live on land. But upon reading the book, seasteading seems closer to reality than a pie-in-the-sky dream. The authors argue that for the most part, the technologies for self-sustaining floating platforms already exist; all that is left is for people and corporations to take the plunge and be pioneers. Not only is this futuristic technology already available, the authors note that cruise ships functionally *are* in many ways floating cities which largely govern themselves and provide for their temporary "citizens" at prices often significantly lower than land-loving vacationers.
You might not be convinced by to pack up all your possessions and join the new frontier of ocean dwellers, but at the very least, _Seasteading_ should open your mind to the possibility of doing so, and possibly sooner than you could imagine. For that alone, _Seasteading_ has jumped into the lead for my favourite book of 2017.