Contrary to what many believe, Alan Turing is not the father of the all-purpose computer. Engineers were, independently of Turing, already building such machines during World War II. Turing's influence was felt more in programming after his death than in computer building during his lifetime. The first person to receive a Turing award was a programmer, not a computer builder. Logicians and programmers recast Turing's notions of machine and universality. Gradually, these recast notions helped programmers to see the bigger picture of what they were accomplishing. Later, problems unsolvable with a computer influenced experienced programmers, including Edsger W. Dijkstra. Dijkstra's pioneering work shows that both unsolvability and aesthetics have practical relevance in software engineering. But to what extent did Dijkstra and others depend on Turing's accomplishments? This book presents a revealing synthesis for the modern software engineer and, by doing so, deromanticizes Turing's role in the history of computing.

"An introduction to diurnal (daytime) and nocturnal (nighttime) animals"--

Daylight is the gripping follow up to Long Road to Mercy and A Minute to Midnight featuring Special Agent Atlee Pine, from one of the world’s most favourite thriller writers, David Baldacci. The hunt Ever since Mercy was abducted aged six, Atlee has been relentless in her search for her. Finally, she gets her most promising breakthrough yet – the identity of her sister’s kidnapper. The capture As Atlee and her assistant, Carol Blum, race to track down the suspect, they run into Pine’s old friend and fellow agent, John Puller, who is investigating the suspect’s family for another crime. The kill Working together, Pine and Puller must pull back the layers of deceit, lies and cover-ups that strike at the very heart of global democracy. And the truth about what happened to Mercy will finally be revealed. That truth will shock Atlee Pine to her very core. Continue the gripping series with Mercy.