Breaking the Code - The Biography of Alan Turing

Computers don't grow on trees, and even though they are ubiquitous today, that wasn't always the case. In fact, they've only been around for less than a hundred years, and although there are certain folks to whom we owe a huge debt of gratitude for laying down the conceptual foundations (the philosopher Leibniz for inventing the binary language system upon which programming depends, for instance, or the enchantress of numbers Ada Lovelace's brilliant insight into the power of computation rather than mere calculation), the individual most directly responsible for modern computation is Alan Turing.

His was a remarkable life, full of genius, insight, inspiration, courage and intellectual creativity. His contributions during World War II (like the fact he broke the Nazi code and was privy to the information sent in secret messages to Hitler and his thugs even before they received it) may be directly responsible for saving hundreds of thousands of lives, and of accelerating the end of the war.

For all of his importance, however, his life was also very tragic. Because of the top-secret nature of his mathematical work during the war, he was never officially recognized. And to add insult to injury, his homosexuality was used to ban him from his own work, to treat him worse than a common criminal, and eventually it led to his suicide. This is his life:

For more on Turing's mathematical and philosophical importance, check out two of my favorite documentaries in this whole blog: Dangerous Knowledge with David Malone, and The Secret Life of Chaos with Jim Al-Khalili.

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Dangerous Knowledge

Beneath the surface of the world are the rules of science, but beneath them there is a far deeper set of rules, a matrix of pure mathematics, which explains the nature of the rules of science...

So begins this David Malone tour-de-force tribute to four geniuses who dared to confront the nature of the rules underlying all mathematics, logic and science, and saw in their various ways that the certainty with which we had become so familiar and comfortable was but an illusion.

Their stories are both inspiring and tragic. These men, Georg Cantor, Ludwig Boltzmann, Kurt Gödel and Alan Turing, were all destined for intellectual fame and greatness, if only posthumously, but because of the nature of their research, because of the intense dedication that their academic problems demanded of them, because of the great resistance they had to overcome from detractors, and because of the major threat they posed to our most foundational beliefs, they came to the brink of madness, and their ends were all tragic, lonely and regrettable. For all of that, however, and however briefly, they each got a glimpse of a reality few, if any of us, will ever get to experience.

This is, quite possibly, the best thing you may do for your brain this week...

And for another masterpiece on Alan Turing's intellectual contributions, check out Jim Al-Khalili's The Secret Life of Chaos.

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The Chinese Room Thought Experiment

The rise of computers in the 20th century, and especially their exponentially increasing computational capacity and speed, has gotten many curious minds to speculate as to whether it is possible at some point to create computers that can think. Those who believe in things like the computational singularity, such as David Chalmers, think it's just a matter of time before we have to bow down to our new mechanized overlords.

Here is a Philosophy Bites interview with Chalmers on just such a question:

Others, like philosopher John Searle, however, think that, given everything we know about computation, it is impossible, even in principle, for computers ever to think, no matter their computational capacity. To prove this point, Searle came up with what has come to be regarded, by supporters and detractors alike, as a classic thought experiment: the Chinese room, which you get to learn about in the following 60 seconds.

For more on questions of mind, consciousness, personal identity, etc., visit the Brainspotting tag.

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