In the 1999 paper published in Nature by Markus Arndt et al entitled "Wave-particle duality of C60 molecules" he states: The fullerenes are of course in this funny state of superposition as they are 'falling'. Couple questions: 1. Is this drop of 0.7 mm identical to what any object would experience? 2. If there were 2 of these fullerenes in a superposition out in space (ie: isolated), would they experience a gravitational attraction to one another? 3. If the 2 fullerenes are attracted to each other, how in principal (please omit any math) would one calculate this attractive force? The point being that these two particles don't have a specified location, so there would seem to be a logical problem with the two particles being able to interact through gravitational attraction.