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Cory Doctorow’s new book looks to offer comfort, and solutions, to the inescapable feeling that digital platforms have gotten worse.

A pharmacologist, she was certain Elizabeth Holmes’s blood-testing idea would fail, and spoke up about it. At first, few listened.

“I do not like the idea of pointing these giant A.I. supercomputers at people’s dopamine receptors and just feeding them an endless diet of hyper-personalized stimulating videos.”

The new A.I. app generated videos of store robberies and home intrusions — even bomb explosions on city streets — that never happened.

Trump administration officials issued several legal threats over ICEBlock, a popular app that allows users to alert others to the presence of nearby immigration agents.