Very useful, even if you don't have a pocket the size of a small brick. In this age of instant obsolescence, Drucker's writings, even from decades ago, stand tall for timeless relevance. Drucker uses plain English and common sense to offer uncommon insights into perennial business problems. He has the highest ratio of insights to words of any reading I have done over the past 30 years. Treat yourself to one article per issue.
Articles are often long, but always thought provoking.
Ninety percent of the writing is as valid ten years later as the day it was published. Fictions of Business melds great literature to enterprise enlightenment. Both get our left and right brains working together in rewarding ways. Both portray outlandish business situations in order to communicate important truths. Read them for fun, and use their messages to keep your sanity in the midst of chaos.