4.0

Sounds dull, doesn't it? What a boring title. But I loved this book. Winchester's writing sings, and his fascination with his subject is infectious. Did you know that the mechanization of making block-and-tackle for British ships (initially) changed the history of the world? How one tiny missed flaw can bring down a jet? How locks were invented, the development of GPS, the ball-point pen? You'll never look at a ballpoint pen the same way again. This is great story-telling. Highly recommended.