Another review of Sonia Arrison's 100+: "I have to congratulate Sonia Arrison on putting together a book that is both highly accessible to newbies with no prior background in transhumanist thinking or longevity research, and also richly interesting to those of us who have playing in these regions of conceptual space for a long time. The main concepts in the book are indeed things I've been familiar with for a long time: (a) There is a host of rapidly accelerating technologies with the apparent capability of dramatically extending human healthspan, (b) Most likely, human psychology and society will adapt to dramatically increased human healthspan as it occurs, so that it will be experienced primarily as a Good Thing rather than as something traumatic or troublesome However, the book is packed with a sufficient number of interesting informational tidbits, that I found it well worth reading in spite of my general familiarity with the biology, psychology and sociology of radical longevity. ... Arrison reviews the key technological streams leading us toward radically increased healthspan - including gene therapy, stem cell therapy, Aubrey de Grey's SENS concept, artificial organs, tissue regeneration, the potential application of advanced AI to longevity research, and so forth. Both current research and envisioned future advances are considered. Then, in what is probably the greatest strength of the book, she considers the potential psychological and social impact of progressively increasing healthspan: the effects, as the book's subtitle indicates, on personal life, family relationships, marriage, careers and the economy etc. Combining common sense with appropriate invocations of rigorous research and statistics, Arrison provides the most systematic refutations I've seen of the standard anti-longevity arguments - 'death gives life meaning', 'overpopulation will starve or bankrupt us all', and so forth. Step by step, and in an invariably good-natured and friendly way, she demolishes these arguments, making a solid case that increased healthspan is likely improve rather than degrade our emotional health and family lives and enhance our careers and economies."