The most recommended Alan Turing books

A Parrot Without a Name is the tale of a quest as primitive and compelling as any grail search from medieval legend. It’s the story of John O’Neill and Theodore Parker, two of the 20th century’s most accomplished birders and ornithologists, and their pursuit of the least known and most elusive birds in the whole of South America. Parker, whose death in a small plane crash in the Ecuadorian mountains cut off one of the most famous and unique escapades in birding – he ended up knowing and recording the calls of more than 4000 bird species – shows up as a colorful character with all the quirks of other great scientific iconoclasts such as Alan Turing and Robert Oppenheimer. 

My first pick is the one most directly about Alan Turing himself. After 1950 his attention turned mainly to his new theory of mathematical biology, but his death in 1954 left most of this work unpublished.  His ideas were 20 or more years ahead of their time and few people could assess them. Jonathan Swinton is a leading expert in this field, and has been studying Turing’s manuscripts for 30 years. But his book has a much broader range: he adds so much on the culture of Manchester and its region, with a particular focus on women both as protagonists and observers. He has also illustrated his story with a wealth of pictures.

This is a book that is at once a biography, a testament to human genius in the face of imminent danger, and a story of human injustice. Alan Turing had an idea about a ‘universal machine’. A machine, when built at Bletchley Park, allowed the Allies in World War II to crack the German Enigma ciphers. This universal machine laid the foundations for modern computing and all the amazing advances we enjoy today. But at a price for Turing, he fought inner demons about his homosexuality and eventually paid the ultimate price.

I marveled at his genius, cheered his cryptographic successes with each cipher cracked, shouted against the tragedy of his arrest, cried at his untimely death. A death at his own hand at the age of 41. The world lost a genius due to a society’s labelling of homosexuality as a crime.

We still live in this world of… show more.

For me, this book got the closest to the nitty-gritty of why mathematicians like me, whose job is to prove theorems, find this activity so compelling.

It’s always been the long hunt, with all the frustration as well as the occasional success, that I’ve found so addictive. Doxiadis brought out the nuances of such pursuits brilliantly – the wily Uncle Petros tells the narrator to prove a mathematical statement despite knowing it is almost surely false.

Ah, these little tricks that we mathematicians enjoy playing on unsuspecting souls (I’ve been known to do this to my students a couple of times).

This little-known book is a beautifully written story of how spacetime processes explain the world of biology and morphology (organism development), using the analogy of mixing colours in a painting to explain how complex forms emerge from “simple" daubs of colour.

Coen explains ideas that go back to Alan Turing’s pioneering studies of biological processes, as well as computation, in a way that was highly influential to me as a scientist. Most of all this is a fine story that will stay with you for years to come written in a personal voice.

Ray Monk has, like me, been drawn to the idea of a linear biographical narrative fusing life and work together. My third pick is his biography of the American physicist Robert Oppenheimer. This is a fascinating story parallel to Turing’s. The Second World War brought both of them, hitherto pure researchers, to intense and crucial involvement in the world’s affairs. Nuclear weapons for Oppenheimer were what codebreaking was for Turing. Afterward, both were at odds with the governments they had empowered.

When in 1953 Turing wrote ‘I detest America’ he might well have been reacting to the McCarthy period in which Oppenheimer was attacked. But Ray Monk treats Oppenheimer’s pure scientific work as seriously as the political story. Oppenheimer’s 1939 paper on black holes was the background to Penrose’s 1965 paper cited in the Nobel physics prize of 2020. These dates illustrate the deep and decades-spanning connections that are involved… show more.

My fourth pick is another biography, of the economist John Maynard Keynes. Richard Davenport-Hines has divided up his account into ‘seven lives’. Yet by taking his personal life and sexual identity seriously, Davenport-Hines achieves an outstanding unification. Seriousness is not solemnity: readers will find here a delightful story about Keynes admiring Alan Turing’s fingernails at King’s College, Cambridge. There is much more to illustrate the extraordinary King’s College ambiance in which Turing found his home, and deeper connections: in late 1946, both were crossing the Atlantic, Keynes to rescue the British economy, Turing on his start-up of the computer industry. Keynesian economics are newly relevant now, but the liberal élite culture in which it was hatched may still surprise readers. When Turing started war work at Bletchley Park, he wrote to Keynes’s circle that Dillwyn Knox was ‘his boss’. Did he know, as Richard Davenport-Hines explains, that Knox had been… show more.

My second choice relates more subtly to Turing’s sudden end in 1954. In 1955, Turing’s colleague Max Newman gave a talk on logic in his honour. This greatly impressed a student, Roger Penrose, who was also studying the quantum mechanics and relativity that had first fascinated the young Turing. Years later, Penrose announced an astonishing thesis relating logic and physics. This book explains the theory he developed. It claims that the brain must exploit quantum-mechanical physics that no computer can emulate. Turing famously promoted the prospects for computer-based Artificial Intelligence, but he would have taken this anti-AI thesis more seriously than any other argument: it takes up his own interests and develops his own kind of thinking. 

Penrose’s books are not about science, they are actually doing scientific thinking. His humour and wonderful pictures enhance the direct personal engagement. The theory is highly controversial but has set a remarkable twenty-first-century… show more.

This is a short punchy book that provides a great introduction to the topic of codebreaking in England during the Great War, giving a sweeping overview and then some entertaining and tantalizing stories about the people involved. At just over a hundred pages, this is a quick read that serves as a fun introduction to the topic.

There’s a lot of fear-mongering going around regarding the possibility of a superintelligent AI that could take over or even wipe out humanity. 

Larson gives a clear rationale for why this is not going to happen and further, why it is a big mistake to expect computer reasoning to be like human reasoning. He explains the ways computers think and how they differ from the ways we do. 

In short, we don’t have a clue how to give computers either consciousness or common sense. Without these, worrying about superhuman intelligence is worrying about the wrong thing. There is no way a computer using current AI methods could evolve into a general intelligence.