In the Motion Mountain project dse.nl/motionmountain/welcome.html Christoph
Schiller defines existence such: "(physical) existence is the ability to
describe interactions." And furthermore explains this by saying: "It is thus
pointless to discuss whether a physical concept 'exists' or whether it is
'only' an abstraction used as a tool for descriptions of observations. The
two possibilities coincide. The point of dispute can only be whether the
descriptions provided by a concept is or is not precise."
Isn't that a good point!!!!
PS. Hello all! I'm an interested party from Sweden.