A Penrose pentagram

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A classic text although that cover art always looks a little off. I’m sure MC Escher would have insisted on the triangle being equilateral.

Most people are familiar with the Penrose triangle by sight even if they don’t know who “Penrose” was. (Psychiatrist Lionel, together with his son, Roger, the celebrated mathematician and physicist.) I’ve been playing with these things for years, most notably on the cover art I created for Zones by Hawkwind, although the triangle also formed the basis for the robot pathways I created a couple of years ago when illustrating Bruce Sterling’s Robot Artists and Black Swans.

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Earlier this week it occurred to me that I hadn’t tried applying the Penrose effect to a pentagram. For a fleeting moment I thought the idea might be a novel one but a quick web search disabused me of this; plenty of similar examples exist already. Here it is anyway, after 20 minutes or so in Illustrator. I’m tempted to try a few more things like this when I have the time. Many possibilities present themselves.

Previously on { feuilleton }
More Swans and Robots

Weekend links 183

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La table qui tourne (1943) by Robert Doisneau.

In [Gödel, Escher, Bach], Hofstadter was calling for an approach to AI concerned less with solving human problems intelligently than with understanding human intelligence—at precisely the moment that such an approach, having borne so little fruit, was being abandoned. His star faded quickly. He would increasingly find himself out of a mainstream that had embraced a new imperative: to make machines perform in any way possible, with little regard for psychological plausibility.

The Man Who Would Teach Machines to Think by James Somers.

Whenever the latest pronouncements about the imminent arrival of artificial intelligence are being trotted out I wonder what Douglas Hofstadter would have to say on the matter. You don’t hear much about Hofstadter despite his having been involved for decades in artificial intelligence research. One reason is that he’s always been concerned with the deep and difficult problems posed by intelligence and consciousness, subjects which don’t make for sensational, Kurzweilian headlines. Hofstadter’s essays on AI (and many other topics) in Metamagical Themas: Questing for the Essence of Mind and Pattern (1985) are essential reading. James Somers’ lengthy profile for The Atlantic is a welcome reappraisal.

• The end of October brings the spooky links: When Edward Gorey illustrated Dracula | Paula Marantz Cohen on Edgar Allan Poe | Yasmeen Khan revisits Werner Herzog’s Nosferatu | Roger Luckhurst on horror from the Gothics to the present day, and Michael Newton on Gothic cinema.

•  Magic Words: The Extraordinary Life of Alan Moore is a biography of the Northampton magus by Lance Parkin. The author talks about his book here, and also here where if you look carefully you can see my Lovecraft book on his shelf.

• A crop of Halloween mixes: Boo, Forever by Jescie | Samhain Seance 2: Hex with a Daemon by The Ephemeral Man | Wizards Tell Lies & The Temple of Doom by The Curiosity Pipe | Radio Belbury’s Programme 11.

The Book of the Lost is an album by Emily Jones & The Rowan Amber Mill presenting music from imaginary British horror films. Release is set for Halloween. More details here.

Laura Allsop on Derek Jarman’s sketchbooks. Jarman’s Black Paintings are currently showing at the Wilkinson Gallery, London.

Magick is Freedom! Existence Is Unhappiness: Barney Bubbles vs. Graham Wood.

• Soho Dives, Soho Divas: Rian Hughes on sketching London’s burlesque artists.

Jenny Diski on the perennial problem of owning too many books.

Equus through the years by Clive Hicks-Jenkins.

Virgin Records: 40 Years of Disruptions

• At BibliOdyssey: Chromatic Wood Type

Witches at Pinterest

The Witch (1964) by The Sonics | My Girlfriend Is A Witch (1968) by October Country | You Must Be A Witch (1968) by The Lollipop Shoppe