Sunday, January 30, 2011

The Drunkard's Walk

Author: Leonard Mlodinow




I have always been fascinated by Probability Theory and found it one of the hardest subjects to master when I was in school. So when I saw this highly acclaimed book in Borders, I was drawn to it. This book attempts to combine some of the history of mathematics and statistics followed by the application of the principles into real world phenomenon and events around us

The book was a very pleasant read. However, when Mlodinow tried to explain basic statistical principles like central limit theorem in a non-mathematical way, it felt like quite a stretch. I was able to follow along since I had studied most of these theorems and principles in excruciating mathematical detail as part of my graduate studies. However, I would be surprised if a casual reader is able to grasp these concepts from the description that is provided in the book.

One of the recurring themes in the book is how eager we are to associate people who are successful with possessing traits that are responsible for their success. The author begs to differ and makes the case that many of these are conveniently identified in hindsight. These very same traits could have been identified as reasons for failure, if the outcome were any different. Randomness plays a big role in who ends up being successful and who is a failure and there are several examples that are provided in the book. The author seems quite eager to prove that point and belabors it to the point where it is not interesting any more.

The author has managed to dig up some interesting characters in the history and evolution of probability and written about their idiosyncrasies in a rather engaging manner. While the book is a good piece of entertainment, it does not leave a lasting impression on the reader.