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  1. "The Cognitive Revolution" | AI Builders, Researchers, and Live Player Analysis
  2. Training an AI Scientist with Feedback from Reality, w- Liam Fedus & Ekin Dogus Cubuk (from a16z)
Training an AI Scientist with Feedback from Reality, w- Liam Fedus & Ekin Dogus Cubuk (from a16z)

Training an AI Scientist with Feedback from Reality, w- Liam Fedus & Ekin Dogus Cubuk (from a16z)

"The Cognitive Revolution" | AI Builders, Researchers, and Live Player Analysis · Oct 2, 2025

Periodic Labs is building an AI physicist by grounding LLMs in physical experiments, using reality as the reward function to accelerate science.

AI Must Learn Physicists' Reasoning Strategies, Not Just Pattern-Match on Data

To make genuine scientific breakthroughs, an AI needs to learn the abstract reasoning strategies and mental models of expert scientists. This involves teaching it higher-level concepts, such as thinking in terms of symmetries, a core principle in physics that current models lack.

Training an AI Scientist with Feedback from Reality, w- Liam Fedus & Ekin Dogus Cubuk (from a16z) thumbnail

Training an AI Scientist with Feedback from Reality, w- Liam Fedus & Ekin Dogus Cubuk (from a16z)

"The Cognitive Revolution" | AI Builders, Researchers, and Live Player Analysis·5 months ago

The Missing Link for AI in Science Is an Iterative Loop of Hypothesis and Experiment

Current LLMs fail at science because they lack the ability to iterate. True scientific inquiry is a loop: form a hypothesis, conduct an experiment, analyze the result (even if incorrect), and refine. AI needs this same iterative capability with the real world to make genuine discoveries.

Training an AI Scientist with Feedback from Reality, w- Liam Fedus & Ekin Dogus Cubuk (from a16z) thumbnail

Training an AI Scientist with Feedback from Reality, w- Liam Fedus & Ekin Dogus Cubuk (from a16z)

"The Cognitive Revolution" | AI Builders, Researchers, and Live Player Analysis·5 months ago

Periodic Labs' Superconductor Goal Forces Development of Foundational AI Capabilities

The ambitious goal of discovering a high-temperature superconductor isn't just a scientific target; it's a strategic choice. Achieving it requires building numerous sub-systems like autonomous synthesis and characterization, effectively forcing the creation of a general-purpose AI for science platform.

Training an AI Scientist with Feedback from Reality, w- Liam Fedus & Ekin Dogus Cubuk (from a16z) thumbnail

Training an AI Scientist with Feedback from Reality, w- Liam Fedus & Ekin Dogus Cubuk (from a16z)

"The Cognitive Revolution" | AI Builders, Researchers, and Live Player Analysis·5 months ago

Periodic Labs Uses Physical Experiments as the Ground Truth Reward Function for AI

Instead of relying on digital proxies like code graders, Periodic Labs uses real-world lab experiments as the ultimate reward function. Nature itself becomes the reinforcement learning environment, ensuring the AI is optimized against physical reality, not flawed simulations.

Training an AI Scientist with Feedback from Reality, w- Liam Fedus & Ekin Dogus Cubuk (from a16z) thumbnail

Training an AI Scientist with Feedback from Reality, w- Liam Fedus & Ekin Dogus Cubuk (from a16z)

"The Cognitive Revolution" | AI Builders, Researchers, and Live Player Analysis·5 months ago

Periodic Labs' Go-to-Market Is an 'Intelligence Layer' for Advanced Manufacturing

While pursuing a long-term research goal, the company's commercial strategy is to build AI co-pilots and intelligence layers for R&D workflows in established industries like space and defense. This approach productizes intermediate progress and targets massive existing R&D budgets.

Training an AI Scientist with Feedback from Reality, w- Liam Fedus & Ekin Dogus Cubuk (from a16z) thumbnail

Training an AI Scientist with Feedback from Reality, w- Liam Fedus & Ekin Dogus Cubuk (from a16z)

"The Cognitive Revolution" | AI Builders, Researchers, and Live Player Analysis·5 months ago

AI for Science Fails on Public Data Due to Noise and Missing Negative Results

Foundation models can't be trained for physics using existing literature because the data is too noisy and lacks published negative results. A physical lab is needed to generate clean data and capture the learning signal from failed experiments, which is a core thesis for Periodic Labs.

Training an AI Scientist with Feedback from Reality, w- Liam Fedus & Ekin Dogus Cubuk (from a16z) thumbnail

Training an AI Scientist with Feedback from Reality, w- Liam Fedus & Ekin Dogus Cubuk (from a16z)

"The Cognitive Revolution" | AI Builders, Researchers, and Live Player Analysis·5 months ago

Periodic Labs Hires for Curiosity, Not PhDs, Since No Single Human Knows Enough

In a field as complex as AI for science, even top experts know only a fraction of what's needed. Periodic Labs prioritizes intense curiosity and mission alignment over advanced degrees, recognizing that everyone, regardless of background, faces a steep learning curve to grasp the full picture.

Training an AI Scientist with Feedback from Reality, w- Liam Fedus & Ekin Dogus Cubuk (from a16z) thumbnail

Training an AI Scientist with Feedback from Reality, w- Liam Fedus & Ekin Dogus Cubuk (from a16z)

"The Cognitive Revolution" | AI Builders, Researchers, and Live Player Analysis·5 months ago

Scaling Laws Can't Cure Cancer Because the Required Knowledge Isn't on the Internet

Simply scaling models on internet data won't solve specialized problems like curing cancer or discovering materials. While scaling laws hold for in-domain tasks, the model must be optimized against the specific data distribution it needs to learn from—which for science, requires generating new experimental data.

Training an AI Scientist with Feedback from Reality, w- Liam Fedus & Ekin Dogus Cubuk (from a16z) thumbnail

Training an AI Scientist with Feedback from Reality, w- Liam Fedus & Ekin Dogus Cubuk (from a16z)

"The Cognitive Revolution" | AI Builders, Researchers, and Live Player Analysis·5 months ago