I'm Mei, an ML research engineer at Renaissance Philanthropy. I study what language models know about their own answers before they say anything about them.

The recent result: a linear probe on a model's hidden state predicts whether its answer is right better than the model's own stated confidence does. The model knows more than it reports. Sometimes it uses what it knows. Sometimes it does not.

Before this I built brain-computer interfaces. MASc in Systems Design Engineering (Waterloo), BHSc in Health Sciences (McMaster), three papers on EEG. On the side I run Free The Agents, an agentic AI studio, and build small instruments for intuition and sound.

  • Making beautiful things
  • Thinking about how we think
  • Producing music, finding my unknown unknowns

Research

Building

Writing

Transmissions

Intermittent signals on what I'm making, thinking, and finding. No schedule, just the interesting parts.