The

The Rationalist's Guide to the Galaxy

Tom Chivers

intermediate6 chapters · 18 levels

Master the art of Bayesian reasoning and cognitive de-biasing to navigate the existential threats facing humanity, from rogue AI to global pandemics. By understanding the mental frameworks of the world’s most rigorous thinkers, you will gain the tools necessary to sharpen your decision-making and protect our long-term future in an era of rapid technological change.

1

The Tribe of Reason

An introduction to the Rationalist community, their unique culture, and the foundational psychological shift from 'winning arguments' to 'seeking truth'.

Scout Mindset vs. Soldier Mindset

The Map is Not the Territory

The LessWrong Origins

2

The Bayesian Brain

Mastering the mathematical and philosophical tools of probability to make better predictions and update beliefs.

Thinking in Percentages

The Bayesian Update

Avoiding the Bias Buffet

3

The Ghost in the Machine

Analyzing the rise of Artificial Intelligence and why the 'Intelligence Explosion' poses a unique challenge to humanity.

Defining Superintelligence

The Orthogonality Thesis

Instrumental Convergence

4

The Alignment Problem

The terrifying difficulty of telling an AI exactly what we want without accidentally causing a catastrophe.

The King Midas Problem

The Paperclip Maximizer

The Stop Button Problem

5

Saving the Future

Broadening the scope to existential risks and the ethical framework of Effective Altruism.

X-Risk: The Big Picture

The Logic of Longtermism

Effective Altruism

6

The Rationalist Frontier

Exploring the more radical ideas of the community and the boundaries of human reason.

Cheating Death

The Fermi Paradox

Limits of the Galaxy

Start reading with AI

Interactive Socratic dialogue, level by level

Get Started