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Can you build a machine that computes anything you wish?
As such, they can be thought of as a practical type of Turing machine--an abstract, hypothetical machine that computes by manipulating symbols.
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The Enigma code-breaker imagined a "universal machine" that could compute, as far back as the war; boxes, now called computers, that could think outside the box.
Where does that change leave the PC, the lowly machine that defined computing for decades?
"To an extent, pi is more real than the machine that is computing it," Gregory remarked to me one day.
But Nick Carr, author of The Big Switch, about the move towards cloud computing, described the launch as "the day the PC died", saying that Apple "wants to deliver the killer device for the cloud era, a machine that will define computing's new age in the way that the Windows PC defined the old age".
All of the experimental results reported in this article were acquired using Rocks Linux version 4.2.1 (Cydonia) on the IBM xSeries 335 (a cluster machine that contains 13 compute nodes).
In doing so, Turing worked out in great detail the basic concepts of a universal computing machine that is, a computing machine that could, at least in theory, do anything that a special-purpose computing device could do.
Turing also showed that there are universal Turing machines — machines that can compute any function computable by any other Turing machine.
His most important contribution to the history of computing remains his 1936 publication "On Computable Numbers", in which he describes a theoretical computing machine that can follow a set of instructions in a step-by-step fashion.
And, as with most such things, we have a creation myth – which starts with Alan Turing and his idea of "a single machine that can be used to compute any computable sequence" and then forks into two versions.
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com