Contrary to popular belief, AI’s primary contribution to exoplanet research is not making novel discoveries. AI is mainly used for supervised learning to perform existing human tasks more quickly and uniformly, rather than uncovering new methods or insights humans couldn't.
In its current form, AI primarily benefits experts by amplifying their existing knowledge. An expert can provide better prompts due to a richer vocabulary and more effectively verify the output due to deep domain context. It's a tool that makes knowledgeable people more productive, not a replacement for their expertise.
In high-stakes fields like pharma, AI's ability to generate more ideas (e.g., drug targets) is less valuable than its ability to aid in decision-making. Physical constraints on experimentation mean you can't test everything. The real need is for tools that help humans evaluate, prioritize, and gain conviction on a few key bets.
In studying sperm whale vocalizations, an AI system trained on human languages did more than just process data. It actively "tipped off" researchers to look for specific spectral properties resembling human vowels. This highlights AI's evolving role in scientific discovery from a pure analytical tool to a source of hypothesis generation.
AlphaFold's success in identifying a key protein for human fertilization (out of 2,000 possibilities) showcases AI's power. It acts as a hypothesis generator, dramatically reducing the search space for expensive and time-consuming real-world experiments.
The ultimate goal isn't just modeling specific systems (like protein folding), but automating the entire scientific method. This involves AI generating hypotheses, choosing experiments, analyzing results, and updating a 'world model' of a domain, creating a continuous loop of discovery.
Contrary to the idea that AI will make physical experiments obsolete, its real power is predictive. AI can virtually iterate through many potential experiments to identify which ones are most likely to succeed, thus optimizing resource allocation and drastically reducing failure rates in the lab.
A major frontier for AI in science is developing 'taste'—the human ability to discern not just if a research question is solvable, but if it is genuinely interesting and impactful. Models currently struggle to differentiate an exciting result from a boring one.
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.
AI's key advantage isn't superior intelligence but the ability to brute-force enumerate and then rapidly filter a vast number of hypotheses against existing literature and data. This systematic, high-volume approach uncovers novel insights that intuition-driven human processes might miss.
Contrary to fears of displacement, AI tools like 'AI co-scientists' amplify human ingenuity. By solving foundational problems (like protein folding) and automating tedious tasks, AI enables more researchers, even junior ones, to tackle more complex, high-level scientific challenges, accelerating discovery.