Happy birthday, Turing!

Today is the 106th anniversary of the birth of Alan Turing. (Of course, at birth he was probably very bad at abstract reasoning and proofs, like most babies, but he overcame these difficulties and grew up to be truly excellent at math.)

Just in case you haven't seen this yet (HT: I saw this on Twitter several times, then on slatestarcodex), it is amusing and recursive and cultural and involves computers:

Humans often post on the website reddit, which hosts many, many different message boards and oodles of subcultures and conversations on specific topics. Each specific message board is called a subreddit and has its own adherents, community standards, topic(s) of conversation, style, level of activity, etc.

There is a subreddit called r/totallynotrobots where the posts claim to be written by humans, but are written in all-caps and a style suggesting that they are actually written by robots. Redditors writing these posts are humans, so these are humans writing as if they are robots who are unconvincingly trying to pass as human.

There is a recent and extremely impressive system called GPT-2 which unsupervised-ly learns English and performs some really impressive computational linguistic feats, including writing mediocre high-school-style essays and writing very interesting and totally feasible poetry.

There is a subreddit called r/SubSimulatorGPT2 which trains GPT-2 on subreddits and automatically writes "coherent and realistic simulated content" for each subreddit. Of course, this subreddit is just going through other subreddits, training GPT-2, and writing new (automated, simulated) posts for that subreddit.

Now the subreddit-simulating robot has trained on r/totallynotrobots, which means that there are posts on the internet which are written by a robot imitating a human writing in a style pretending to be a robot who is unconvincingly trying to pass as a human. (Or, as slatestarcodex put it, "a robot pretending to be a human pretending to be a robot pretending to be a human.") You can see those posts here.

It's turtles all the way down, and every. single. turtle. is a Turing machine!


This post's theme word is anastrophe, "the inversion of the usual order of words or clauses." Silly grammar mistakes and anastrophe are used to denote unfamiliarity with human language.