🌍 My chat (+transcript) with researcher Toby Ord on existential risk

The 2020s have so far been marked by pandemic, war, and startling technological breakthroughs. Conversations around climate disaster, great-power conflict, and malicious AI are seemingly everywhere. It’s enough to make anyone feel like the end might be near. Toby Ord has made it his mission to figure out just how close we are to catastrophe — and maybe not close at all!

Ord is the author of the 2020 book, The Precipice: Existential Risk and the Future of Humanity. Back then, I interviewed Ord on the American Enterprise Institute’s Political Economy podcast, and you can listen to that episode here. In 2024, he delivered his talk, The Precipice Revisited, in which he reassessed his outlook on the biggest threats facing humanity.

Today on Faster, Please — The Podcast, Ord and I address the lessons of Covid, our risk of nuclear war, potential pathways for AI, and much more.

Ord is a senior researcher at Oxford University. He has previously advised the UN, World Health Organization, World Economic Forum, and the office of the UK Prime Minister.

In This Episode

* Climate change (1:30)

* Nuclear energy (6:14)

* Nuclear war (8:00)

* Pandemic (10:19)

* Killer AI (15:07)

* Artificial General Intelligence (21:01)

Below is a lightly edited transcript of our conversation.

Climate change (1:30)

. . . the two worst pathways, we're pretty clearly not on, and so that's pretty good news that we're kind of headed more towards one of the better pathways in terms of the emissions that we'll put out there.

Pethokoukis: Let's just start out by taking a brief tour through the existential landscape and how you see it now versus when you first wrote the book The Precipice, which I've mentioned frequently in my writings. I love that book, love to see a sequel at some point, maybe one's in the works . . . but let's start with the existential risk, which has dominated many people's thinking for the past quarter-century, which is climate change.

My sense is, not just you, but many people are somewhat less worried than they were five years ago, 10 years ago. Perhaps they see at least the most extreme outcomes less likely. How do you see it?

Ord: I would agree with that. I'm not sure that everyone sees it that way, but there were two really big and good pieces of news on climate that were rarely reported in the media. One of them is that there's the question about how many emissions there'll be. We don't know how much carbon humanity will emit into the atmosphere before we get it under control, and there are these different emissions pathways, these RCP 4.5 and things like this you'll have heard of. And often, when people would give a sketch of how bad things could be, they would talk about RCP 8.5, which is the worst of these pathways, and we're very clearly not on that, and we're also, I think pretty clearly now, not on RCP 6, either. So the two worst pathways, we're pretty clearly not on, and so that's pretty good news that we're kind of headed more towards one of the better pathways in terms of the emissions that we'll put out there.

What are we doing right?

Ultimately, some of those pathways were based on business-as-usual ideas that there wouldn't be climate change as one of the biggest issues in the international political sphere over decades. So ultimately, nations have been switching over to renewables and low-carbon forms of power, which is good news. They could be doing it much more of it, but it's still good news. Back when we initially created these things, I think we would've been surprised and happy to find out that we were going to end up among the better two pathways instead of the worst ones.

The other big one is that, as well as how much we'll admit, there's the question of how bad is it to have a certain amount of carbon in the atmosphere? In particular, how much warming does it produce? And this is something of which there's been massive uncertainty. The general idea is that we're trying to predict, if we were to double the amount of carbon in the atmosphere compared to pre-industrial times, how many degrees of warming woul