Alexander Pruss's Blog

From time to time I’ve been playing with the question whether velocity just is rate of change of position over time in a philosophical elab...

Here is a big picture story about Newtonian mechanics: The state of the system at all times t  >  t 0 is explained by the initial condit...

We often talk as if quantum mechanics were philosophically much more puzzling than classical mechanics. But there is also a deep philosophic...

Suppose a rock is flying through the air northward, and God miraculously and instantaneously teleports the rock, without changing any of its...

The following seem quite plausible: It is possible for an object both (a) to have both a first and a last moment of its existence and (b) to...

Here are some plausible theses: Necessarily, an object that is in the same place at time t as it has been for some non-zero period of time ...

Start with Zeno's paradox of the arrow. Zeno notes that over every instant of time t 0 , an arrow occupies one and the same spat...