THE IMPROBABLE THEORY OF ANA & ZAK Brian Katcher Katherine Tegen Books 2015 328 Pages There’s a gap wider than the entire breadth of the alphabet between A (Ana) and Z (Zak), the high school protagonists of this Young Adult comedy of escalating errors. A type A personality, driven overachiever and straight-A student Ana Watson resembles a proto-Margaret Thatcher. The product of a strict upbringing, repressed Ana is meekly subservient to parental diktats while coming across as arrogant and aloof to everyone else. Happy-go-lucky slacker Zakory “Duke” Duquette, on the other hand, has no clear goals in life and is happy to drift along; indulging his fondness for such geeky pastimes as role-playing games, comic books, science fiction movies and other such manifestations of American pop culture. Both characters are humanly flawed, somewhat irritating and fairly well...