"On the other hand, applications like airline reservations and buying concert tickets will probably always need structured data, since they rely upon the ability to accurately manage shared access to a single data item instance (i.e. the airplane or concert hall seat) so that it is sold only once and on a first come first served basis."
"Applications like purchase order approval, medical records distribution, expense report filing, engineering and repair drawing distribution, safety inspections, and so on, really do not derive any benefit from the significant effort required to structure their data."