Benedict Cumberbatch stars as British mathematician and scientist Alan Turing in The Imitation Game; Charles Dance plays Commander Denniston. Director Morten Tyldum says the movie is set up like a mystery — "like a puzzle you're piecing together."
Jack English/Black Bear Pictures
All of our scientific tools have limits. These limits ensure that we will never see the whole picture. We can never have complete knowledge of the universe. Above, the ESO's APEX radio telescope probes the heavens from its lonely perch on Chile's Chajnantor plateau.
Detail of a Turing Bombe machine in Bletchley Park Museum in Bletchley, central England. The device, the brainchild of Alan Turning, was instrumental in cracking the German code during World War II.
Alessia Pierdomenico/Reuters /Landov