I thought this deserved 3.5 stars, but I'm perfectly happy to round up to 4 on the grounds that it was entertaining, thought-provoking, unpretentious and well-executed. Other reviewers have faulted it for lacking philosophical depth, but really - what could they have been expecting? The author makes no pretences, and the format of the book couldn't be clearer. It is what it sets out to be - 100 brief "philosophy" puzzles, each following a strict 3-page format, in which the puzzle/paradox/point of contention is described in the first page, then discussed (or resolved in those cases where resolution is possible) in the remaining two pages.
So, yeah, that format doesn't afford much scope for teasing out an issue in great depth. But it works better than you might think. Different vignettes can be used to approach a given theme from different angles and Baggini revisits his more interesting themes several times throughout the book (each chapter cross-references others that are loosely related). I don't necessarily fault an author for having a gimmick - sometimes it's an unhelpful distraction, but sometimes it can provide a kind of structure that turns out to be entirely beneficial. This book was an illustration of how a constraint can be useful - the 3-page limit helped keep things focused.
How well the book turns out is, of course, critically dependent on two factors:
1. How smart and interesting are the scenarios chosen for inclusion?
2. How good is the author at exposition? (which has a whole number of subdimensions - is his style academic? dull? accessible? sloppy? clear? irritating? credible? condescending? humorous?)
Baggini acquits himself well on both counts. Though he doesn't quite manage to pull off the folksy humor to which he aspires, his style is brisk, without condescension and free of annoying tics. More importantly, he is effective at hitting a decent balance in tone between the academic and the popular.
The selection of thought experiments was better than I had anticipated. Obviously, they're not all going to be winners - for instance, I personally no longer find anything even remotely interesting in Zeno's paradox, Buridan's ass, other people's famous inability to grasp the fact that coins and roulette wheels don't have a memory, the notion that living forever would suck all the joy out of life, or the inability to know how another person perceives color. But I do have a definite weakness for questions pertaining to ethical and moral choice, so those vignettes kept me entertained for hours. In general, the author covers the major bases - consciousness, perception, reality, pain, empathy, morality and ethics. For me, the most interesting scenarios were those which explored the nuances of moral responsibility in various hypothetical (but very concrete) settings.
What sealed the fourth star were the chapters that nudged me out of my comfort zone. For example, the scenarios which addressed our stewardship of the environment and the ethical treatment of animals captured and held my attention. The book's format favors concrete, crisply formulated, scenarios - the kind that you find yourself thinking about days later. Many don't have an obvious 'right' answer, in these cases Biaggini is smart enough not to try to provide one - he just wants to get you thinking about this stuff. At his most effective, he's almost demonically successful - for the last two days I've been trying (unsuccessfully) to come up with a convincing argument to dispel the notion that I'm suspended in a pod of amniotic fluid with a computer feeding me all the necessary stimuli needed to make me think my virtual reality is 'actual' reality.
Whimper...
There are limits, however. Despite the cogency of the arguments presented as ethical justification for eating our deceased family pets, Boris and Natasha need have no fear*. The crockpot and the Foreman grill have no role in their future.
*: Sadly, I understand all too well that this is the kind of sentimental foolishness to which we humans are susceptible. I have no illusions about the kitties' behavior should I drop dead and leave them unfended for. The transition from living food provider to dead food source would, I imagine, be rapid.
But I digress. The bottom line is that I enjoyed this book quite a bit more than I had expected to -- the author's particular gimmick actually worked out pretty well.