ISBN-13: 9781606492093 / Angielski / Miękka / 2011 / 348 str.
The onus to exchange, the bartering of the fruits of one's labor, achieved by physical work or applied knowledge, with another is the natural condition of humankind. In this book, it separates us from other species on earth and underscores humankind's desire to reach out and touch - integrate with others.