Inheriting a Four Trillion Dollar To-Do List

The news that Tim Cook is stepping down as CEO of Apple to become Executive Chairman is the sort of corporate event that usually requires a very large, very expensive bottle of champagne and a slightly smaller, but equally expensive, box of tissues. For fifteen years, Mr. Cook has presided over a company that has grown from a very successful maker of shiny rectangles into a $4 trillion juggernaut that is essentially a small, highly profitable nation-state with its own currency (Apple Card) and a standing army of people who will wait in line for three days for a slightly different shade of titanium.

Taking over the corner office is John Ternus, a man who has spent the last few years as the head of hardware engineering, which means he is responsible for the fact that your iPad is now thinner than a slice of artisanal sourdough and significantly more expensive. Mr. Ternus is, by all accounts, a very capable fellow, but he is inheriting a to-do list that would make even the most ambitious Greek hero decide that cleaning the Augean stables was a much more relaxing way to spend a weekend.

At the top of that list, written in a font that is probably very elegant but also slightly panicked, is the word "AI."

For the last decade, Apple has treated Artificial Intelligence with the sort of polite distance one usually reserves for a distant cousin who has recently joined a cult. While the rest of Silicon Valley was setting fire to their balance sheets to buy every H100 chip in existence, Apple was quietly perfecting the way a digital shadow falls across a virtual button. It was a strategy of "wait and see," which is a very sophisticated way of saying "we hope this is a phase."

Unfortunately for Mr. Ternus, it is not a phase. It is a $60 billion acquisition of Cursor by SpaceX, a $25 billion investment in Anthropic by Amazon, and a general sense that if your refrigerator doesn't have a large language model capable of writing a haiku about the expiration date of your milk, you are living in the dark ages.

To put $4 trillion into perspective, if you were to spend a dollar every second, it would take you approximately 126,839 years to run out of money. This is roughly the amount of time it takes for a human being to fully understand the terms and conditions of an iCloud update. It is a sum of money so vast that it ceases to be a number and becomes a geological feature. When Mr. Ternus looks at the company's bank balance, he isn't looking at a spreadsheet; he is looking at a mountain range made of cash, and his job is to make sure nobody accidentally sets it on fire while trying to build a generative AI that can remove ex-boyfriends from holiday photos.

Tim Cook’s tenure will be remembered as the era of the Great Optimization. He is a man who can look at a shipping container and see a symphony. Under his watch, Apple became a machine that turned raw aluminum and human desire into a quarterly dividend that could fund a small space program. He didn't just sell phones; he sold the idea that a supply chain could be a work of art. It was a very successful run, provided you didn't mind that the art was mostly about making sure the phones arrived in London at exactly the same time they arrived in Los Angeles, regardless of the weather or the state of global geopolitics.

I once saw a man in a coffee shop staring at his iPhone with such intense devotion that I assumed he was either receiving a message from a deity or trying to figure out how to turn off the flashlight. It occurred to me then that Apple doesn't just make tools; it makes secular icons. And the problem with icons is that they are very difficult to upgrade. You can't just give a saint a new set of features without people getting upset about the tradition.

The challenge for the new CEO is not just to build a better chatbot—though Siri’s current level of intelligence suggests that even a particularly bright golden retriever might be a step up—but to do so while maintaining the "Walled Garden." This is the metaphorical space where Apple users live, protected from the harsh realities of the outside world by high prices and a proprietary charging cable.

In the AI era, the Walled Garden is starting to look a bit like a very beautiful, very expensive museum. It is full of exquisite artifacts, but the visitors are all looking out the windows at the robots building a new city across the street. Mr. Ternus must now figure out how to invite the robots inside without them knocking over the vases or, worse, suggesting that people might want to use a different operating system.

The "Silicon Minefield" refers to the fact that Apple is now in a race to build its own chips for everything. This is a bit like a gourmet chef deciding that, in addition to cooking the meal, they must also grow the wheat, mill the flour, and personally interview the cow. It is an exhausting way to run a restaurant, but it is the only way to ensure that the bread is exactly the right shade of beige. Mr. Ternus, coming from the hardware side, understands this better than anyone. He knows that the future of AI isn't in the cloud; it's in the tiny pieces of sand we've tricked into thinking.

There is also the matter of the Apple bureaucracy. This is a company where a decision about the radius of a corner can take six months and involve three committees and a retreat in the woods. Transitioning to a new CEO in this environment is like trying to turn a cathedral into a startup. You have to move the pews, but the pews are load-bearing and also sacred.

There is a certain institutional absurdity to the handover. Apple is a company that prides itself on being "different," yet it is now facing the most conventional of corporate problems: a leadership transition in the middle of a technological revolution. It is like trying to change the pilot of a 747 while the engines are being replaced with experimental fusion reactors, and the passengers are all complaining that the in-flight movie isn't in 8K.

One can imagine the first day for Mr. Ternus. He walks into the office, sits down at the desk that once belonged to Steve Jobs and Tim Cook, and looks at the phone. He picks it up and says, "Siri, what is the strategy for the next five years?"

And Siri, with its characteristic charm, replies, "I'm sorry, I didn't quite catch that. Would you like me to search the web for 'tragedy for the next five ears'?"

It is a daunting prospect. But if anyone can navigate the minefield of silicon and sentiment, it is a man who has spent his career making sure that the hinges on a laptop feel "emotional." We wish him the best of luck. He is going to need it, and probably a very large cup of tea.