Alexander Pruss's Blog

Let X and Y be independent random variables uniformly distributed over [0,1), and suppose our setup is symmetric between X and Y (i....

Every natural perceptual faculty we have sometimes functions veridically. We have a natural faculty of religious perception. Religi...

Question 1: I uniformly choose a random number X from the interval [0,1] (all points from 0 to 1, inclusive). What is the conditional pro...

If presentism is true, future events are not real. It is not rational to trade a real good event for a non-real event. It is ration...

Franciscan University of Steubenville has posted my talk on sexual ethics on YouTube . The talk gives some of the central ideas of my One B...

Suppose I have (both objectively and subjectively) a morally decisive reason R to refrain from doing A . But nonetheless I do A for s...

According to best-systems accounts of laws, the laws are the theorems of the best system correctly describing our world. The best syste...

Suppose we have some situation where either event A or event B occurred, but not both, and the two events are on par : our epist...

According to subjective Bayesianism, the only constraints on prior probabilities are that they be consistent and, for contingent e...

If mereological universalism holds, then for any predicate F that is satisfied by an object, there is a mereological sum of all the object...

Suppose you're one of the nodes of this infinite tree, cut off for the purposes of the diagram, but you have no information whatsoever o...

For most of the week I was at the Santa Cruz Philosophy of Cosmology institute. Thursday I gave a talk on the Principle of Sufficient Reaso...

Why should we prefer simple and elegant theories, the empirical evidence being equal? There are two standard answers (besides the...

Say that: C quasi-deterministically causes E iff necessarily either C causes E or C does not cause anything. Now, quasi-d...

There are two devices, A and B , each of which generates an independent uniformly distributed number between 0 and 1. You have a choice b...