Re:Ringworld? (Score 1)

(This is from memory -- forgive me my errors.) A General Products hull is composed of a single molecule artificially strengthened with generated fields. If it comes in contact with enough antimatter to destroy a "sufficient" number of the atoms in the molecule, the hull will essentially unravel. Prior to the "most interesting planet" incident, GP did not believe that there was antimatter present in sufficient quantities in our galaxy to initiate such a reaction.