Soul Physics: Best of 2009

If you're new to Soul Physics, try some of our classic posts! The following posts received either a lot of traffic or a lot of comments (or both) in 2009.

• Where the material conditional gets its truth conditions. A simple explanation to aid students of classical predicate logic.
• Hyper-intelligent fish and black hole thermodynamics. A thought on the well-known analogy between hydrodynamics and black hole thermodynamics.
  
• Can Time Unfold in the Wrong Direction? An argument that yes, it can, according to Special Relativiy.
• How Time Really Passes. A response to John Norton's argument that there's some sort of problem here.
• Another unexpectedly simple failure of determinism. An ill-posed initial value problem of the Norton-dome kind, constructed from a simple mass-on-a-spring system.
  
• Possible Positions on the Passage of Time. An illustrated catalogue of your options.
• Group Structural Realism (Part 4). The last of a 4-part argument that there's little hope for this kind of view.

Best wishes for 2010!
-- Bryan