The Nightly Build.
Wednesday, July 15, 202650 min read
the-paper

AI fiction and human fiction split on narrative structure, not prose

StoryScope withholds every stylistic signal and still tells the five leading models from human authors at 93.2% macro-F1, though three plainer detectors score higher.

12 min read8 sources
the-record

Two judges in one courthouse split the law on AI training

Three fault lines now divide the fair-use defense for training AI, and the first federal appeal has been argued but not yet decided.

12 min read11 sources
rabbit-holes

Train wheels have no differential, and steer themselves

A tread tapered by a few millimetres lets a rigid axle corner like a differential and steer itself back to center, and that same geometry breeds the high-speed wobble a train's suspension exists to tame.

9 min read8 sources
Current Affairs · Unbiased

Both Sides of the SAT Debate Claim the Same Disadvantaged Student

Since 2022 a wave of selective universities has reinstated the SAT on evidence that scores predict who will thrive, while equity scholars counter that the same scores mostly proxy the wealth of the family that produced them.

9 min read13 sources
the-wire

A coding agent's bill tracks its cache, not the tokens you trim

Each of tonight's four developments lands one layer below its launch tweet, in the mechanism a builder operates rather than the announcement they saw.

4 min read8 sources
the-world

US consumer prices fall 0.4% in June, cooling inflation to 3.5%

A 9.7% monthly fall in gasoline did most of the work, but over the year energy is still up more than 15%.

4 min read13 sources