philosophical science

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Latest Book

Knowledge and the Norm of Assertion

An Essay in Philosophical Science

woman talking
She knows what she's talking about.

Awesome Collaborators

Wesley Buckwalter

Philosopher
Wesley Buckwalter

One of the most accomplished young philosophers working today, Wesley has made breakthrough conceptual discoveries about knowledge and morality.

Wesley

Angelo Turri

Mathematician
Angelo Turri

An aspiring mathematician, Angelo has done novel experimental work on lying and set a record by publishing in a major science journal at age fourteen.

Angelo

David Rose

Cognitive scientist
David Rose

A leading experimental philosopher, David has made impressive contributions in epistemology, metaphysics, and cross-cultural philosophy.

David

David Rose

Cognitive scientist

A leading experimental philosopher, David has made impressive contributions in epistemology, metaphysics, and cross-cultural philosophy.

Angelo Turri

Mathematician

An aspiring mathematician, Angelo has done novel experimental work on lying and set a record by publishing in a major science journal at age fourteen.

Ori Friedman

Psychologist

As director of the Child Cognition Lab, Ori has made important discoveries about how we reason about ownership and other people’s minds.

Wesley Buckwalter

Philosopher

One of the most accomplished young philosophers working today, Wesley has made breakthrough conceptual discoveries about knowledge and morality.

Cool Findings

(that replicate)

The Bi-Location Effect

twin baby
Two places. One person. No problem.

The Untruth Effect

pinocchio
Falsity is essential to lying.

Exceptionalist Naturalism

raccoon on ledge
Yes, we (think we) can.

The Source-Content Bias

red pill, blue pill
Psychological roots of skepticism.

Recent Papers

tower of babel

Cross-linguistic disagreement

Language

You can disagree with someone even if you don’t speak their language so good.

hole in a wall

Lying by omission

Language

Evidence that assertion is essential to lying.

poison vial

Toxic intentions

Mind

Pick your poison … and intention.

apple

Knowledge and Justification

Cognition

On the ordinary view, if you know, then you’re justified.

angel

Impossible Intentions

Mind

It’s possible to intend what you think is impossible.

gavel of truth

Truth, Fallibility, and Justification

Language

More on the truth about how truth truly matters.

film negatives

A Peculiar and Perpetual Tendency

Cognition

I did not just show that you can’t prove a negative.

pinocchio

Objective falsity is essential to lying

Language

An objectively compelling case that falsity is truly essential to lying.

pinocchio

Lying, Fast and Slow

Ethics

Some people can’t handle the untruth.