The Daily Index — Tuesday, October 6, 2026 · TLDR Index

GENERAL

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Meet RangerAI

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runmyjobs.redwood.com

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APPLE INVITES DEVELOPERS TO SUBMIT IPHONE DUO-READY APPS TO THE APP STORE

Apple is now accepting submissions of iPhone Duo-optimized apps and games. Xcode 27.1 Release Candidate 1 features support for building and testing apps and games for the iPhone Duo. Developers can now submit iPhone Duo-optimized apps and games in App Store Connect. App Store product pages will display a badge to let people know apps are optimized for the iPhone Duo. Recompiling existing apps with Xcode 27.1 adds development support for iPhone Duo.

9to5mac.com · 1 min

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PREVIEW, EDIT, AND COLLABORATE ON MARKDOWN (.MD) FILES NATIVELY ACROSS DRIVE AND DOCS

Google Docs now supports Markdown files. Google Drive now renders Markdown previews. The new features are available to all Google Workspace customers and users with personal Google accounts. They will be gradually rolled out over the next two weeks.

workspaceupdates.googleblog.com · 1 min

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CONTROLLING THE BRAIN WITH LIGHT EARNS A PHYSIOLOGY NOBEL

Karl Deisseroth, Peter Hegemann, and Georg Nagel have won the Nobel Prize in Physiology or Medicine for their contributions to the field of optogenetics. Optogenetics involves using light to alter the behavior of nerve cells marked by the activity of individual genes. It allows researchers to activate or shut down neurons in an otherwise intact brain. The technique has revolutionized scientists' ability to understand what different populations of nerve cells are doing.

arstechnica.com · 9 min

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of stories in Gartner's AI hub

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gartner.com

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EPHEMERAL TESTING

Ephemeral testing is when you test a base application layer by building on top of it. The original work is not assessed - the software built on top of it is. It is a form of integration testing, except the software on top is thrown away when the test is complete. Instead of building the core while trying to anticipate what might be needed at the other layers, you just simulate the other layers by building them.

lemire.me · 2 min

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WHY PLAIN TEXT IS STILL ONE OF THE BEST TECHNOLOGIES WE HAVE

The simplicity of plain text is a large part of why it has lasted. Plain text is part of the basic plumbing of computing. There is an enormous collection of tools that know how to work with plain text, and plain text gives users more choice. Text ages surprisingly well, and it is easy to own. It is portable, inspectable, searchable, scriptable, easy to back up, and remarkably resistant to obsolescence.

deadparrotbbs.com · 7 min

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THE FUTURE OF MATHEMATICS

The field of mathematics is changing, but mathematics is still as important today as it ever was. Mathematics remains a core capacity for human reasoning and deliberation. Future historians will likely see this time as the start of a new era for mathematics. We are at a new frontier where communal norms, values, and expectations are beginning to break down, and the community needs to figure out what should replace them.

terrytao.wordpress.com · 13 min