Six-minute segment from Amazon’s AWS re:Invent keynote last week:

Payam Mirrashidi, VP, Cloud Systems & Platforms, Apple, explains how AWS Graviton helps improve developer velocity at scale. Hear Swift’s journey from the premier programming language for the Apple ecosystem to adoption by millions of developers around the world building apps for everything from devices to data centers.

(Graviton is AWS’s ARM-in-the-cloud initiative.)

Nothing earth-shaking in this brief presentation, but it’s not often you see an Apple VP on stage at another company’s keynote, or see Apple so very publicly declare their reliance on someone else’s infrastructure. It speaks to Apple and Amazon being more allies than competitors amongst the big tech companies. And of course, you even less often see anyone from Apple speak live on stage at Apple’s own keynotes, which, alas, are no longer live nor on stages.

Youki Terada, writing for Edutopia in 2022 (via Jens Kutílek):

Under close scrutiny, the evidence for dyslexia-friendly fonts falls apart. In a 2017 study, for example, researchers tested whether OpenDyslexic, a popular font with thicker lines near the bottom of the letters, could improve the reading rate and accuracy for young children with dyslexia. According to the developers of the font, which is open-source and free of charge, the “heaviness” of the letters prevented them from turning upside down for readers with dyslexia, which they claimed would improve reading accuracy and speed.

Researchers put the font to the test, comparing it with two other popular fonts designed for legibility — Arial and Times New Roman — and discovered that the purportedly dyslexia-friendly font actually reduced reading speed and accuracy. In addition, none of the students preferred to read material in OpenDyslexic, a surprising rebuke for a font specifically designed for the task.

In a separate 2018 study, researchers compared another popular dyslexia font — Dyslexie, which charges a fee for usage — with Arial and Times New Roman and found no benefit to reading accuracy and speed. As with the previous dyslexia font, children expressed a preference for the mainstream fonts. “All in all, the font Dyslexie, developed to facilitate the reading of dyslexic people, does not have the desired effect,” the researchers concluded. “Children with dyslexia do not read better when text is printed in the font Dyslexie than when text is printed in Arial or Times New Roman.”

Quoting from the abstract of the first study cited above:

Results from this alternating treatment experiment show no improvement in reading rate or accuracy for individual students with dyslexia, as well as the group as a whole. While some students commented that [OpenDyslexic] was “new” or “different”, none of the participants reported preferring to read material presented in that font. These results indicate there may be no benefit for translating print materials to this font.

The problem isn’t dyslexia if you don’t notice that OpenDyslexic is “different”.

Quoting from the second cited study:

Words written in Dyslexie font were not read faster or more accurately. Moreover, participants showed a preference for the fonts Arial and Times New Roman rather than Dyslexie, and again, preference was not related to reading performance. These experiments clearly justify the conclusion that the Dyslexie font neither benefits nor impedes the reading process of children with and without dyslexia.

OpenDyslexic’s website has a “related research” page but of the four articles they link to, three are 404s, and the other one only studied “extra-large letter spacing”. I chased down the correct link to one of the other articles they cite, and the only fonts it studied were Verdana, Arial, Georgia, and Times.

Some people claim to prefer reading text set with OpenDyslexic. Some people like Comic Sans, too. But I was unaware that these typefaces that purport to be designed specifically to benefit people with dyslexia are based on misguided beliefs that dyslexia is a visual problem, and that actual research shows they do not provide the benefits they claim to. They’re just ugly fonts.

Small follow-up point re: my post this week on iMessage’s delivery architecture being built atop the Apple Push Notification service:

APNs can only relay messages up to 4 or 16 KB in size, depending on the iOS or iPadOS version. If the message text is too long or if an attachment such as a photo is included, the attachment is encrypted using AES in CTR mode with a randomly generated 256-bit key and uploaded to iCloud. The AES key for the attachment, its Uniform Resource Identifier (URI), and an SHA-1 hash of its encrypted form are then sent to the recipient as the contents of an iMessage, with their confidentiality and integrity protected through normal iMessage encryption, as shown in the following diagram.

This explains why you can often text, but not send or receive images, with iMessage over in-flight Wi-Fi. (Thanks to Adam Shostack for flagging this detail.)

OpenAI:

In ChatGPT, GPT‑5.2 Instant, Thinking, and Pro will begin rolling out today, starting with paid plans. In the API, they are available now to all developers.

Overall, GPT‑5.2 brings significant improvements in general intelligence, long-context understanding, agentic tool-calling, and vision — making it better at executing complex, real-world tasks end-to-end than any previous model.

5.1 was released just one month ago, but 5.2 delivers a slew of measurable improvements across the board. Where 5.1 was seemingly more about the feel of responses, the personality, 5.2 was clearly focused on tangible and benchmarkable gains.

Before anyone starts patting the Trump administration on its back for one good typographic decision, take a gander at the hard-to-believe-this-is-real new signage at (and alas, on) the White House. This is the sort of signage that typically spells “Business Center” across from the check-in desk at a Courtyard Marriott. The Biden State Department replacing Times New Roman with Calibri was a typographic misdemeanor. Festooning the White House with signage set in gold-plated Shelley Script ought to land Trump in The Hague.

(The idea that the Oval Office ought to be explicitly labeled “The Oval Office” — whatever the typeface or signage style — brings to mind this classic Far Side cartoon, which I think aptly illustrates the president’s mental faculties.)