"As is often the case in scientific endeavour, Turing was
actually working on an entirely different task when he stumbled on
a way to create a general-purpose computer.
"The paper that encapsulated this machine? On Computable Numbers
with an Application to the Entscheidungsproblem.
"The Entscheidungsproblem - which translated from German
literally means "decision problem" - referred to a mathematical
challenge laid down by German mathematician David Hilbert."
