Intellectual space – a theoretical array of unique locations
Intellectual matter – that which can be understood through language
The Ludwig von Mises Test of External Reality – a thing is real and external to the human mind if it has the ability to condition the outcome of human events.
Intellectual object - an ascertainable, temporally stable and bounded pattern of intellectual matter which can condition the outcome of human events
Rivalrous – a quality such that use by one interferes with use by another.
Intellectual property – a non-trivial, homesteaded rivalrous intellectual object that substantially functions as productive capacity