Monthly Archives: December 2017

Scott Aaronson

Quantum Computing since Democritus is a candidate for the weirdest book ever to be published by Cambridge University Press. The strangeness starts with the title, which conspicuously fails to explain what this book is about. Is this another textbook on quantum computing—the fashionable field at the intersection of physics, math, and computer science that’s been promising the world a new kind of computer for two decades, but has yet to build an actual device that can do anything more impressive than factor 21 into 3 × 7 (with high probability)? If so, then what does this book add to the dozens of others that have already mapped out the fundamentals of quantum computing theory? Is the book, instead, a quixotic attempt to connect quantum computing to ancient history? But what does Democritus, the Greek atomist philosopher, really have to do with the book’s content, at least half of which would have been new to scientists of the 1970s, let alone of 300 BC?

Having now read the book, I confess that I’ve had my mind blown, my worldview reshaped, by the author’s truly brilliant, original perspectives on everything from quantum computing (as promised in the title) to Gödel’s and Turing’s theorems to the P versus NP question to the interpretation of quantum mechanics to artificial intelligence to Newcomb’s Paradox to the black hole information loss problem. So, if anyone were perusing this book at a bookstore, or with Amazon’s “Look Inside” feature, I would certainly tell that person to buy a copy immediately. I’d also add that the author is extremely handsome.

Scott Aaronson, Quantum Computing since Democritus, Cambridge, 2013, p. ix

Anthon Chekhov

Experience often repeated, truly bitter experience, had taught him long ago that with decent people, especially Moscow people—always slow to move and irresolute—every intimacy, which at first so agreeably diversifies life and appears a light and charming adventure, inevitably grows into a regular problem of extreme intricacy, and in the long run the situation becomes unbearable. But at every fresh meeting with an interesting woman this experience seemed to slip out of his memory, and he was eager for life, and everything seemed simple and amusing.

Anton Chekhov, ‘The Lady with the Dog’, 1899, part 1

Charles McGrath

[Robert] Caro had a[n] epiphany about power in the early ’60s. He had moved on to Newsday by then, where he discovered that he had a knack for investigative reporting, and was assigned to look into a plan by Robert Moses to build a bridge from Rye, N.Y., across Long Island Sound to Oyster Bay. “This was the world’s worst idea,” he told me. “The piers would have had to be so big that they’d disrupt the tides.” Caro wrote a series exposing the folly of this scheme, and it seemed to have persuaded just about everyone, including the governor, Nelson Rockefeller. But then, he recalled, he got a call from a friend in Albany saying, “Bob, I think you need to come up here.” Caro said: “I got there in time for a vote in the Assembly authorizing some preliminary step toward the bridge, and it passed by something like 138-4. That was one of the transformational moments of my life. I got in the car and drove home to Long Island, and I kept thinking to myself: ‘Everything you’ve been doing is baloney. You’ve been writing under the belief that power in a democracy comes from the ballot box. But here’s a guy who has never been elected to anything, who has enough power to turn the entire state around, and you don’t have the slightest idea how he got it.’”

The lesson was repeated in 1965, when Caro had a Nieman fellowship at Harvard and took a class in land use and urban planning. “They were talking one day about highways and where they got built,” he recalled, “and here were these mathematical formulas about traffic density and population density and so on, and all of a sudden I said to myself: ‘This is completely wrong. This isn’t why highways get built. Highways get built because Robert Moses wants them built there. If you don’t find out and explain to people where Robert Moses gets his power, then everything else you do is going to be dishonest.’”

Charles McGrath, ‘Robert Caro’s Big Dig’, The New York Times, April 12, 2012

Arnold Bennett

[I]f I take the case of a Londoner who works in an office, whose office hours are from ten to six, and who spends fifty minutes morning and night in travelling between his house door and his office door, I shall have got as near to the average as facts permit. There are men who have to work longer for a living, but there are others who do not have to work so long. […] If my typical man wishes to live fully and completely he must, in his mind, arrange a day within a day. And this inner day, a Chinese box in a larger Chinese box, must begin at 6 p.m. and end at 10 a.m. It is a day of sixteen hours; and during all these sixteen hours he has nothing whatever to do but cultivate his body and his soul and his fellow men. During those sixteen hours he is free; he is not a wage-earner; he is not preoccupied with monetary cares; he is just as good as a man with a private income. This must be his attitude.

Arnold Bennett, How to Live on 24 Hours a Day, London, 1910, ch. 4