Schematics within architectural and interior design are an example of instruction in which interpretation is not subjective.  A design schematic is a true representation of an object intended for construction.  Flaw in design equals flaw in truth in relation to the completed object as intended.  In comparison, musical notation allows for a degree subjective interpretation.  Design schematic as score is the dualistic: instructional to enable reading yet with parameters that are open to subjective interpretation.  Subsequent realisation is wholly instructive; it requires mathematical rigour to be definitively representative of the contracted object.  One way in which design schematic differs from notated music is perspective: the realisation of both is three-dimensional yet only schematic considers multi-perspective instructions.