Alexander Pruss's Blog

Imagine that Alice lives in a classic growing block world, while Twin Alice lives in an eternalist world. Otherwise, the two worlds are exac...

This is yet another attempt to answer the question of the conditions under which in an atomic world with classical mereology we have unrestr...

Say that a total order is locally finite provided that between any two elements there are at most finitely many elements. A locally finite ...

Compare two worlds: Evanescent World (EW): There is a rich three-dimensional reality that exists for only one moment of time. Timeless Wo...

Donald Williams in his famous “The Myth of Passage” argued that time cannot flow, because if it did, then it would require either a meta-ti...

Let’s assume causal finitism is false, and that the past can be infinite. If an object pops into existence ex nihilo at a specific time t ...

A correspondent asked me why not to simply believe in a restricted Principle of Sufficient Reason (PSR) that says that everything contingent...

Sider suggests this four-dimensionalist characterization of “temporary parthood” in terms of temporal parts: Necessarily, x is part of y...

How many objects exist at t is not even partly grounded in facts about how things are at times later than t in worlds without backwards c...

Suppose I am sluggish mentally in the morning and function fast mentally in the afternoons. I find myself in a dark room with no information...

The Aristotelian account of individuation for beings in the same species proceeds by matter. But to fill out this account, we may need to ta...

Consider this thesis, which both Augustine and Aquinas would accept: Value supervenes on being (VSB): How valuable reality is is determine...

In yesterday’s post , I discussed the Real Presence in the context of relativistic time. There, I made the assumption that when Christ is re...

Jesus Christ like all human beings has an internal clock. One can measure that clock in heartbeats or in lower level physical interactions o...

Maybe you have a cancer that would kill you in three months. So, get a powerful rocket. Accelerate close to the speed of light, and make a...

We have an infinite future. If eternalism is true, then anything that has an infinite future is infinite. We are finite. So, eternalism ...

You don’t believe in the afterlife. Your doctor tells you that you will die in a week. You are terrified. A couple of minutes later, the doc...

Over the last two days, I’ve been thinking critically about Aquinas’ First Way. Central to my thinking, and especially yesterday’s post , wa...

Stump and Kretzmann give three main concepts of simultaneity in their famous paper : T-simultaneity between items in time E-simultaneity ...

This seems a bit plausible: It is unjust to punish someone for a feature that is not intrinsic to them. If presentism is true, then havin...