FOM: An explanation of the method of thought experiments

[Reuben Hersh]

examples where something is old in one way, new in another--or,
"the same" in one way, "different in another."

infinitesimals of Abraham Robinson (vs infinitesimals of 
Archimedes)       

a fresh CD of Gregorian Chant
a "re-mastering" of a 1940 performance of Arthur Schnabel
the Faust legend, from Marlowe to Goethe to Mann
a film of Medea
red hair on a kid whose parents are dark-haired but had one red-haired
grandma
democracy in Athens, reborn in modern times ?
the atomic theory of matter (Democritus, Lucretius) reborn ? in modern times
the state of Israel
etc.
Reuben Hersh