On Saturday 06 Nov 2010 10:10:06 am Steve Thomas wrote:
Lastly I really love your question: "Is there really such a thing as a molecule? How can we avoid asking you just to believe it?"
It is not a belief. It is a working assumption. A belief is something that one holds all the time. A working assumption is something that we hold to be true within a context. One can posit an atom to be a particle in one context and a wave in another. It does not have to 'exist'.
Subbu