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Sorry skeptics, AI really is changing the programming profession

But AI agents aren't making programmers obsolete.

Timothy B. Lee
Mar 02, 2026
∙ Paid
This post originally appeared in Understanding AI.

“AI isn’t replacing one specific skill. It’s a general substitute for cognitive work.”

Twitter co-founder Jack Dorsey is now the CEO of Block, which runs payment services like Square and Cash App. On Thursday, he announced plans to lay off more than 4,000 workers — 40 percent of the workforce — and Block’s share price soared.

“Something has changed,” Dorsey wrote in a tweet. “The intelligence tools we’re creating and using, paired with smaller and flatter teams, are enabling a new way of working which fundamentally changes what it means to build and run a company. And that’s accelerating rapidly.”

Block CEO Jack Dorsey. (Photo by MARCO BELLO/AFP via Getty Images)

The announcement hit a nerve because it seemed to confirm public fears about the impact of AI on white-collar work. A widely read essay from Citrini Research last weekend predicted that AI-driven progress would drive wave after wave of layoffs.

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