1. Introducing Spacetime Singularities and Acausalities 2. Defining, Characterizing, and Proving the Existence 3. Cosmic Censorship 4. Supertasks 5. The Big Bang and the Horizon Problem 6. Time… Expand

Spacetime substantivalism leads to a radical form of indeterminism within a very broad class of spacetime theories which include our best spacetime theory, general relativity. Extending an argument… Expand

It is argued that the main problem with "the problem of the direction of time" is to figure out what the problem is or is supposed to be. Towards this end, an attempt is made to disentangle and to… Expand

The standard theory of computation excludes computations whose completion requires an infinite number of steps. Malament-Hogarth spacetimes admit observers whose pasts contain entire future-directed,… Expand

We reject the widespread notion that the achievements and the scientific status of the special sciences must be understood in terms of ceteris paribus laws.Expand

It is generally acknowledged that the requirement that the laws of a spacetime theory be covariant under a general coordinate transformation is a restriction on the form but not the content of the theory.Expand

Newton's "Principia "introduced conceptions of space and time that launched one of the most famous and sustained debates in the history of physics, a controversy that involves fundamental concerns in… Expand