Dream Machines: Physical AI, Robotics, Being Human

World models have become one of the most hyped frontiers in AI — and for good reason. The technology is reaching a tipping point, it’s attracting some of the world’s best AI talent, and many believe world models could be the unlock for both AGI and general-purpose robotics.
But ask five people what a “world model” actually is, and you’ll probably get five different answers.
That’s because there isn’t one approach. There’s a whole spectrum of world models being built today, each trying to understand and simulate the physical world in a different way.
To cut through the ambiguity, I sat down with Matthias Niessner, CEO of SpAItial, a London + Munich-based startup building one of the leading world models for physical AI.
In this episode, we cover:
The spectrum of world models — from pixel-first video models, to 3D spatial representations, to systems that learn physics and cause-and-effect in latent space.
Why video models may be hitting a wall — particularly around spatial consistency, long time horizons, and real-time interaction.
How world models are actually trained — including the role of massive video datasets, data curation, multimodal signals, and learned representations.
“Looks right” vs. “behaves right” — and why generating a photorealistic world is very different from generating one that behaves according to real physics.
Why 3D consistency matters — and why a world that changes as you move through it isn’t really a persistent model of the world.
How physics enters the picture — from relatively simple rigid-body dynamics to far harder problems like fluids, deformation, and objects shattering.
The limits of video game data — and why learning from existing physics engines can only get you so close to reality.
World models for robotics simulation — including a future where a photo of a home, factory, or workspace can become a training environment for a robot.
Closing the sim-to-real gap — and why increasingly realistic learned simulations could fundamentally change how robots are trained.
The path to general-purpose robotics — and how better models of the physical world could accelerate the arrival of machines that can operate reliably almost anywhere.
I learned a ton in this episode — and walked away even more optimistic about how quickly we may be approaching general-purpose robotics.
So with that, I bring you Matthias Niessner.


This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit www.dreammachines.ai

Today’s guest is Will McDonald, co-founder and Chief Product Officer of Miris.
Miris is rethinking how high-fidelity 3D content gets delivered at scale. Their thesis: the future of 3D depends entirely on simplifying distribution.
In that vein… we talk about why pixel streaming falls short, how Miris uses volumetric data instead, and why that matters for everything from e-commerce and gaming to robotics and simulation.
Will and I worked together for many years at AWS, so we also dive into lessons learned from Amazon’s customer obsessed culture, what it gets right, and experience of going from big tech back into startups.
If you care about spatial computing and simulation, and where the 3D internet is heading, this one’s worth the time.
With that I bring you, Will McDonald.


This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit www.dreammachines.ai

If you want to understand what it takes to get robots out of the lab and into production, this one’s for you.
Today, I’m joined by the cofounders of Bifrost: Charles Wong (CEO) and Aravind Kandia (CTO).
Bifrost is one of the leaders in synthetic data generation and simulation for evaluation. They’ve built some of the most impressive tools I’ve seen to date for helping robotics developers train, test, and deploy autonomy in the real world.
In this episode, we discuss:
* what most teams still get wrong with simulation
* why real-world data alone is not enough
* why evaluation is becoming the real bottleneck
* how the best teams are closing the infamous sim-to-real gap
* where simulation will be in 5-10 years
These guys are two of the sharpest founders building in robotics right now — and they’ve been at it long before the physical AI hype train. I think you’ll find their insights super valuable and rich with signals from the frontlines.
With that, enjoy this episode with Charles and Aravind.


This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit www.dreammachines.ai

Apple Podcast Link
Spotify Podcast Link
Today’s guest is Will McDonald, co-founder and Chief Product Officer of Miris.
Miris is rethinking how high-fidelity 3D content gets delivered at scale. Their thesis: the future of 3D depends entirely on simplifying distribution.
In that vein… we talk about why pixel streaming falls short, how Miris uses volumetric data instead, and why that matters for everything from e-commerce and gaming to robotics and simulation.
Will and I worked together for many years at AWS, so we also dive into lessons learned from Amazon’s customer obsessed culture, what it gets right, and experience of going from big tech back into startups.
If you care about spatial computing and simulation, and where the 3D internet is heading, this one’s worth the time.
With that I bring you, Will McDonald.


This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit www.dreammachines.ai

Apple Podcast Link
Spotify Podcast Link
This was the most unique and fun episode I’ve done in a while, and it starts in a very unexpected place…
With the art of clowning.
Strange I know, but stick with us, because we quickly connect that world to technology, robotics, and why it holds surprisingly powerful lessons for this moment in time; especially if we want to design intelligent, embodied systems that humans actually want to engage with.
Our guest today is Pasquale D’Silva, CEO of The Illusion of Life, a company building characters and personalities into robots to make them interesting, fun, warm, and worthy of trust.
This all starts with their partnership with Boston Dynamics, where they’ve taken the Spot robot dog and turned it into a character with a real personality, called Spark.
In this chat, we talk about the relationship between humans and machines, and explore all kinds of crevasses, including trust, presence, emotional intelligence, and why artists—not just engineers—may be the key to building joyful, human-centered robots.
If you’re curious about the future of human–machine interaction, you’re gonna love this one. It will stretch your imagination in all the best ways.
So with that, enjoy this episode with Pasquale D’Silva.


This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit www.dreammachines.ai