Alexander Pruss's Blog

In the case of non-epistemic goods, it’s an obvious feature of life that someone there is a choice to be made by an individual between their...

It’s easy to generate probabilistic paradoxes in a universe (or multiverse) with infinitely many people (e.g., if infinitely many people rol...

It has occurred to me that there is a kind of fine-tuning of multiverse theories. If there is too large a variety of universes within a mul...

Suppose that the right way to combine epistemic utilities or scores across individuals is averaging , and I am an epistemic act expected-uti...

Suppose time is in fact continuous and modeled by the real numbers. It seems odd indeed to me that the real numbers should be the only pos...

This is another attempt at an argument against inferentialism about logical constants. Given a world w , let w * be a world just like w e...

Here’s a metaphysical view I haven’t seen: the fundamental obejcts (priority version) or the only objects (existence version) are universes,...

This argument is an intuition-pump. I don’t know if it can be made rigorous. Start with some observations. Let Q 0 be the nomic parameters...

Consider a fine-tuning argument like this: On theism, it is moderately likely that there would be a fine-tuned universe. On naturalism, i...

I’ve been thinking about some odd parallels between the many-worlds interpretation of quantum mechanics and open future views. On both sets...

Suppose I am considering two hypotheses, H 1 and H 2 , and according to H 2 there are more people. Does the fact that I exist give me reas...

A multiverse hypothesis that counters the fine-tuning argument posits laws of nature that vary across physical reality. A hypothesis that ...

Imagine this unfortunate sequence of events will certainly befall you in a classical universe: You will be made to fall asleep. Upon waki...

Some cosmological theories lead to the worrisome conclusion that most people with present brain states like ours are Boltzmann brains—random...

One can think of Everettian multiverse quantum mechanics as beginning by proposing two theses: The global wavefunction evolves according t...

Here’s yet another way to formulate my omniscience argument against a theistic multiverse, a theory on which God creates infinitely concrete...

Somehow it hasn’t occurred to me until yesterday that quantum multiverse theories (without the traveling minds tweak) undercut half of ethi...

Xenophanes famously lambasted Greek religion for its anthropomorphism: if cattle or lions had hands, so as to paint with their hands and pro...

A standard puzzle for the opponent of the Principle of Sufficient Reason (PSR) is to explain why we don’t observe objects coming into existe...

Tariq Nazeem emailed me a really cool and simple argument against certain kinds of gigantic multiverses. I’ve tweaked the argument a little,...