Archive - Richard’s Substack

David Blackwell on the Comparison of Experiments

Hypotheses, signals, and Bayesian learning

Apr 5 •

Richard Pettigrew

February 2025

The cost of remembering

Evaluating forgettings

Feb 3 •

Richard Pettigrew

January 2025

Choosing reasons to choose: Chang, Murdoch, and Walden on quandaries

I wrote last summer about Ruth Chang’s concept of will-given reasons, which she contrasts with what she calls world-given reasons. In that post, I was…

Jan 27 •

Richard Pettigrew

December 2024

Edward Craig on the social role of knowledge ascriptions

In a previous post, I asked of the concept of epistemic rationality the same question that Edward Craig asks of the concept of knowledge in Knowledge…

Dec 23, 2024 •

Richard Pettigrew

What is epistemic rationality? And why?

Jane is investigating a murder at the local parsonage.

Dec 12, 2024 •

Richard Pettigrew

November 2024

The source of preferences and the effectiveness of consent

There are many things we can do that switch the moral facts.

Nov 6, 2024 •

Richard Pettigrew

On the inseparability of selves

In the previous post, I raised a question about the relationship between interpersonal morality and intrapersonal morality.

Nov 3, 2024 •

Richard Pettigrew

October 2024

Weighing selves, weighing others

In Choosing for Changing Selves, which I wrote towards the end of the 2010s, I tried to formulate a response to a worry that Edna Ullmann-Margalit…

Oct 16, 2024 •

Richard Pettigrew

July 2024

Review of Daniel J. Singer, Right Belief and True Belief, OUP, 2023

According to the traditional understanding, ethical normativity is about what you should do and epistemic normativity is about what you should believe…

Jul 28, 2024 •

Richard Pettigrew

Is knowledge more valuable than mere true belief?

Plato’s Meno is a puzzling dialogue.

Jul 19, 2024 •

Richard Pettigrew

Cohen's conservatism and valuing the valuable

What is conservatism?

Jul 13, 2024 •

Richard Pettigrew

June 2024

A solution to the puzzle of unwanted evidence?

In last week’s post, I wrote about a puzzle that arises when you receive evidence you’d rather you hadn’t received.

Jun 21, 2024 •

Richard Pettigrew

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