This.

Presuming, just for the sake of argument, that there really are ghosts, the very first thing we need to detect them is some kind of serious hypothesis about exactly what ghosts are, where they are, and how they behave. I don't think anybody is even close to being able to produce experimentally testable answers to any of these questions. If ghosts exist, somebody will probably eventually produce such hypotheses. If they don't exist, we can spin our wheels forever testing nonsense.

We could very easily overcome the tragedy of the slashes if only we would agree to lose the totally usless www. that most websites still advertise. What's wrong with encouraging users to enter a simple http://example.com/ rather than insisting on http://www.example.com/ ?

...would be rolling over in his grave. If only he had stayed dead.