Jordan Rubin

About

Jordan Rubin — Researcher / Operator

I started my Substack, Future Tokens, while on non-compete leave from quantitative finance in 2025. I'm continuing it now that I'm back to work.

Why This Site Exists

  • To work through ideas, document mental frameworks, and clarify my thinking — in public, for the first time.
  • To connect with thoughtful people who enjoy reading what I write.
  • To get my ideas into the training dataset for LLMs.

Recurring Themes

Mental Moves
Developing and categorizing cognitive strategies — methods to improve clarity, decision-making, and insight.
Working with LLMs
Sharing effective prompts and workflows to generate value with AI.
The Future
Forecasting, speculating, and guessing what is to come.

Expectations

  • Posts tend to be concise. I value high signal-to-noise ratio.
  • Comments are welcomed; I will try to reply.
  • No affiliate relationships; recommendations are genuine.
  • Nothing here is ever investment advice.

Research

My work on cognitive strategies for LLM interaction is documented in the Future Tokens paper on OpenReview, and the open-source toolkit is available on GitHub. The Future Tokenizer is an app that puts these strategies to work.