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

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

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

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 Untruth Effect

pinocchio
Falsity is essential to lying.

The Bi-Location Effect

twin baby
Two places. One person. No problem.

The Source-Content Bias

red pill, blue pill
Psychological roots of skepticism.

Excuse Validation

broken ruler
How to break a rule without “breaking” it.

Recent Papers

road sign - two ways

Deciding without Intending

Mind

Evidence that you can decide to do something without intending it.

apple

Knowledge and Justification

Cognition

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

fox

Reasons and Basing in Commonsense Epistemology

Metaphysics

Reasons are causes, inside your mind and out.

horseshoes

Knowledge and Truth

Metaphysics

How is knowledge like horseshoes?

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.

a horse's mouth

Knowledge, Adequacy, and Approximate Truth

Cognition

Straight from the horse’s mouth, a shocking truth, or thereabout.

foundation

Knowledge from Falsehood

Cognition

It’s possible to infer knowledge from a false premise.