4 3 2 1 may be Paul Auster's greatest achievement, at 866 pages, it's certainly his longest book. It begins in 1947 in New Jersey with the birth of Archibald Isaac Ferguson. From that moment, Ferguson's life, and the book, take four separate, simultaneous and independent paths. Each chapter sets out a few years in each version of the characters life; after 4 versions, we return to the first for the next few years, and so on. It is a bit hard to follow, as each life shares some of the peripheral characters, but the events unfold differently.