"Even by 1800s standards, Ada Byron Lovelace had an unusual upbringing. Her narcissistic mother worked hard at cultivating her own role as martyred ex-wife of bad-boy poet Lord Byron and had Ada tutored at home by some of the brightest minds. Ada developed a hunger for mental puzzles, mathematical conundrums, and scientific discovery that kept pace with the breathtaking advances of the industrial and social revolutions taking place in Europe. At seventeen,...