Alexander Pruss's Blog

I just got permission from the National Catholic Bioethics Quarterly to post my 2006 paper on fetal tissue and vaccines. It is here .

A number of Catholic authorities have made a moral distinction between the Pfizer and Moderna vaccines, on the one hand, and the AstraZeneca...

Suppose I know that from now on for an infinite number of years, I will be offered an annual game. A die will be rolled, I will be asked to ...

Let p be the proposition that among the last six coin tosses worldwide that proceeded my typing the period at the end of this sentence, the...

In my previous post , I suggested that proportionality considerations in Double Effect work differently for positive actions (doings) than f...

The Principle of Double Effect seems to imply that either there are real dilemmas—cases where an action is both forbidden and required—even ...

Let P be the set of countably additive probabilities on a countable set Ω . A strictly proper accuracy scoring rule on some set of credence...

Van Inwagen’s famous argument against the Principle of Sufficient Reason rests on the principle: A necessary truth cannot explain a contin...

Michael Nielsen has drawn my attention to the interesting question of scoring rules for forecasts on an infinite sample space Ω . Suppose th...

One picture of credences is that they are derived from agents’ valuations of wagers (i.e., previsions) as follows: the agent’s credence in a...

A standard principle in the interpretation of Catholic canon law is the principle that restrictive laws are understood narrowly and permissi...

It is traditional Christian teaching, as far back as we can trace it, that: Abortion is always wrong. Nonetheless, historically many Chr...

An (inaccuracy) scoring rule measures how far a probabilistic forecast lies from the truth. Thus, it assigns to each forecast p a score s (...

Consider this Harm Principle: Without a relevant connection to actual, intended or risked harm, there is no wrongdoing. Now suppose Carl...

The SEP’s article on discrimination talks of discrimination as involving the imposition of a relative disadvantage on a member of a group. ...