Tuesday, August 10, 2010
the inner workings of ENIGMA
It's a complicated but all-together basic electro-mechanical sytem. We can imagine it starting with a basic one-to-one encryption; ie. each letter standing for the one before it in the alphabet (A=>B, B=>C). There is a qwerty keyboard for entering code. When a letter is pressed, a rotor advances such that the letter would now represent the one 2 spaces before it in the alphabet (A=>C, B=>D). Except the Enigma has multiple rotors...You can find the details of it's set-up (and find more pictures) on the wiki.
When you're pros with the concept, check out this fun description sparked by a comparison of wristwatches.
Tuesday, July 27, 2010
a bio of "Pat"
Turing Test
We are considering a symposium on the topic of whether the Turing test still applies today. Perhaps it is too rudimentary to test modern robot minds? Read this article which outlines the flaws and ultimate infeasibility of the Turing test.
Monday, July 19, 2010
Turing Machine for Dummies
here's a short definition from a computer engineer buddy of mine (from an online conversation):
David: Suuuper simple
They are a thought experiment.
And are useful for proving things (ie, what a computer can and can't do)
David: basically a turing machine is a black box and a piece of tape
and the tape has writing on it
the box can read one character of writing at a time, then either move the tape left or right, replace the character it's reading, or do nothing
and that's pretty much it
but turing showed that that's all you need to do every computation a modern computer can do
David: so modern computers are modeled after the box
me: why is the infinite tape necessary?
David: there are a whole bunch of computations that you can't do with a turning machine
David: but the "tape" in a computer is 8.79609302 × 10^12 characters long, so essentially it’s the same as a Turing machine
Friday, July 16, 2010
symptoms of bovine TB
more Manchester
[note: "Greater Manchester" is a county consisting of 10 boroughs, of which the City of Manchester is one.]
And let us not forget the pride and joy of the city...
and again, the University of Manchester.
Friday, July 9, 2010
snow white
A classic, Disney's Snow White was the first feature length animated film. It was created with cel-animation and revolutionized movie marketing and expectations. Snow White was the most expensive Disney film at the time and many thought it would be a failure. It came through as a success however, running at Radio City for more weeks than any film at its release in '38 (popular demand would have had it shown for longer) and getting named as one of the best movies of all time.
~video!! Snow White was allegedly Turing's favorite fairy tale and he found the film fascinating. Most believe his suicide to be inspired by the Queen's poisoned apple.
A lethal dose of cyanide halts respiration usually leading to coma, seizure, heart attack and death. Various solutions have been used for mass murder (hydrogen cyanide was the toxic agent in Holocaust gas chambers. It smells like bitter almond) Cyanide is said to taste bitter-salty...until the tongue fibers in contact die.
manchester
the Alan Turing Building on campus, completed in 2007, houses the mathematics and astrophysics departments as well as the photon science institute.
modern exterior of the Odeon Theater-likely architecturally unchanged since the 50s when Turing met " Ron" outside one such cinema.
"Teddy Boys" in their neo-Edwardian threads, Manchester, 1955. This look was popular among eccentrics in the UK.
St Peter's Sq,1956. Note the buildings blackened by soot.
Monday, July 5, 2010
Monday, June 28, 2010
Sherborne School
Founded in 1550, Sherborne is an independent school for boys ages 13-18 with heavy tradition that provides "An invigorating, intellectually sound and multi-faceted environment'' though it's also been described as "not always gentle." Sherborne has many notable alums in fields ranging from acting (Jeremy Irons) and academia (Turing and Alfred Whitehead) to international royalty. Though it used to concentrate heavily on the classics--like most British boys schools of the era.
Modern students dress as such on a daily basis.
Uniforms from the late 1960s--ah, the boaters...
Turing at Sherborne. He was considered "antisocial" and his work "messy" as a student. He seemed to focus on investigation beyond his level of mathematics rather than consolidating the basics. More accounts/details here .
Saturday, June 26, 2010
first!!
the nytimes is right on the ball with us; check out this piece posted on their site today:
computer timeline!
awesome.
currently hunting down "the essential turing" for more insight on his work. some kid beat me to the check-out by 2 days so it's not due back in ages. argh. googlebooks anyone?
also found some computer scientists we'd be honored to feature in symposiums, etc. so weird to imagine some of the most basic programs and machines we use every day were created by someone (xerox, drag and drop) and what do you know? turing started it all.