This book review was originally published in The Washington Post.

Sprawling, earnest and ambitious — its modest title is “The Future”—Al Gore’s new book embodies both the virtues and the flaws of its author. But those hardy souls who slog past the weaknesses will be rewarded by a book that is brave, original and often fun. Inevitably, there’s a lot here about the two signature Gore preoccupations — climate change and technological innovation — but what really makes “The Future” worth reading is two newer ideas.

The first is the premise. Gore believes we are living in a “new period of hyper-change.” The speed at which our world is changing, he argues, is unprecedented, and that transformation is the central reality of our lives. The technology revolution, Gore writes, “is now carrying us with it at a speed beyond our imagining toward ever newer technologically shaped realities that often appear, in the words of Arthur C. Clarke, ‘indistinguishable from magic.’ ”

This is not a truth universally acknowledged — some economists, such as Tyler Cowen, argue that innovation has stalled and that our low-growth economies are the result — and that is part of what makes “The Future” interesting.

Characteristically, Gore doesn’t play down his conviction that this time, things really are different. He thinks that the world is experiencing “exponential change,” that the transformation is different not just in degree but in kind from previous periods of tumult and — in one of the leaps across millennia in a single paragraph that are a leitmotif of this book — that our Ice Age brains are struggling to cope with a world governed by the kind of exponential increases suggested by Moore’s Law.

Gore’s thesis of hyper-change is the justification for the vast, messy range of this book. It is risky to write about all of human and geological history, about the whole world, about all the important frontiers in science, about business and politics and society and nature. But Gore makes no excuses for this widest of lenses. On the contrary, his thinking demands it. If humanity is changing more profoundly and faster than ever before, you have to try to connect as many dots as your Stone Age neocortex can bear — and if the result isn’t the neatest of narrative arcs, that hardly seems to matter.