The Download: Claude’s inner workings, and the future of world models

This is today's edition of The Download, our weekday newsletter that provides a daily dose of what's going on in the world of technology.

What Anthropic’s latest AI discovery does—and doesn’t—show

—James O'Donnell

When Anthropic announced last week that it had found a new window into its models’ “internal thoughts” as they reason through answers, there was one colleague I had to talk to: senior editor Will Douglas Heaven.

Aside from having a PhD in computer science, Will has spent a lot of time digging into what we can say about how AI models work. I spoke with him about what we should take from Anthropic’s new (and typically quirky) research. Here’s what he had to say.

How will AI understand the real world?

Today’s AI systems can generate text, images, and code with impressive skill, but they still struggle with the complexities of the physical world. To bridge this gap, many researchers believe you need something called a world model.

At a LinkedIn Live event today, MIT Technology Review will investigate how this technology could transform robotics and help unlock a new generation of intelligent machines. Join Will Douglas Heaven, our senior editor for AI, and Sam Sinha, founding AI researcher and head of world models at 1X Technologies, for the discussion. 

Register here to attend the free session at 9:30 PDT, 12:30 PM EDT, and 5:30 PM BST. 

The must-reads

I’ve combed the internet to find you today’s most fun/important/scary/fascinating stories about technology.

1 New York has become the first state to enact a data center moratorium
Its governor banned large data-center construction for up to a year. (WSJ $)
+ A bill passed by state lawmakers could go even further. (Verge)
+ Everyone hates data centers. (MIT Technology Review)

2 Smartphone shipments have hit a 13-year low due to the memory crunch
They fell 11% in the second quarter of 2026. (Reuters $)
+ The memory chip ‌shortage has increased prices. (Gizmodo)
+ And threatens the promise of Moore’s Law. (MIT Technology Review)

3 Sugar molecules have been found in interstellar space for the first time
It hints that life on Earth may have been seeded from space. (Nature) 
+ And boosts the odds of living organisms existing elsewhere. (New Scientist $)
+ Researchers used radio telescopes and data to spot the molecules. (NYT $)

4 Nvidia has halved its Asia buyer list to stop AI chips reaching China
It introduced a "white list" of companies that passed tougher checks. (FT $)
+ It moved amid tighter chip controls from the ‌Trump ⁠administration. (Reuters $)

5 Russian state hackers are targeting routers to spy and steal, the US warns
The government has warned users to secure their devices. (Ars Technica)
+ Now is a good time for doing crime. (MIT Technology Review)

6 Trump moved his crypto gains into stocks while urging people to buy more
His crypto projects earned him a fortune—but steep losses for retail buyers. (Reuters $)
+ He’s called for Congress to pass a new crypto bill to honor Lindsey Graham. (CNBC)

7 A new cell therapy has saved four children with terminal brain cancer
They were treated with an experimental immunotherapy. (New Scientist $)
+ Access for older children will also be limited. (Bloomberg $)

8 The LAPD has halted use of Flock surveillance cameras due to privacy issues
Flock’s automated license plate readers have caused concerns. (LA Times $)
+ It’s also been criticized for sharing data with state and federal officials. (Engadget) 

9 The US has approved launching a space mirror that reflects sunlight onto Earth
As part of a controversial plan to power solar panels round the clock. (Wired $)
+ But geoengineering faces many practical challenges. (MIT Technology Review)

10 Anthropic says Claude’s values vary depending on your language
It’s most cautious in English and most deferential in Arabic. (Gizmodo) 

Quote of the day

“The age when humans are the highest life form on earth will end. For better ​or for worse, it will happen and it can't be stopped.” 

—SoftBank CEO Masayoshi Son predicts that AI will overtake human intelligence by 2040 in a speech at his company’s annual corporate conference in Tokyo, Reuters reports.

One More Thing

Inside the strange limbo facing millions of IVF embryos

Millions of embryos created through IVF sit frozen in time, stored in cryopreservation tanks around the world. Many are left in a peculiar limbo, with no clear path forward.

UK residents can discard them, make them available to other prospective parents, or donate them for research. People in the US can also opt for “adoption,” “placing” their embryos with families they get to choose. In Germany, people aren’t typically allowed to freeze embryos at all. And in Italy, unused embryos must remain frozen, ostensibly forever. 

While these embryos remain in suspended animation, patients, clinicians, embryologists, and legislators must grapple with the essential question of what to do with them. What do these embryos mean to us? Who should be responsible for them?