This is not a book of in-depth philosophy. 50 ideas are introduced, but only briefly, with four pages allotted to each idea. These four pages are enough to introduce each idea and get the reader to thinking about them. The 50 ideas are grouped into several sections, namely:
· Problems of knowledge
· Mind matters
· Ethics
· Logic and reasoning
· Science
· Aesthetics
· Religion
· Politics, Justice and Society
Some of the ideas covered in these sections are:
· The Ship of Theseus (When all of the pieces of the ship are replaced is what is now present the same ship?)
· The Turing Test for artificial intelligence.
· Do animals have rights?
· The ontological argument.
· Hobbes' Leviathan.
· The prisoners dilemma (game theory)
· Various logical paradoxes
I found the writing clear and the book highly readable and entertaining. In addition to text, each idea is supplemented with boxes containing some extended discussion of a particular point and some quotations concerning the idea. While someone better versed in philosophy than I may find this book overly superficial. I found that it introduced each idea with a minimum of the mind numbing jargon associated with philosophy. Many of the sections got me to think about things in a new light and made me want to learn more about the ideas that were introduced. I thus recommend this book to those who just want an introduction to 50 philosophy ideas, but are not yet willing to tackle philosophy head-on and in-depth. (Be warned, however, that the section on religion takes on a decidedly anti-theist tone, which may be troublesome reading for some readers. On the other hand, others may find this section quite illuminating.)