It was discussed here about copy protection problems - fuzzy data in track dump, what is not supported by Pasti (at least earlier versions).
For Marcer (and others) : Owners of double sided drives don't need third disk, because it's same as side B of second disk. Side B of first is for determining is drive single or double sided. In any case, if you have undamaged original there must be data on third floppy.
Famous Schrodinger's cat hypothetical experiment says that cat is dead or alive until we open box and see condition of poor animal, which deserved better logic. Cat is always in some certain state - regardless from is observer able or not to see what the state is.