Sui generis database right
A "sui generis" database right is considered to be a property right, comparable to but distinct from copyright, that exists to recognise the investment that is made in compiling a database, even when this does not involve the "creative" aspect that is reflected by copyright.
Abductive reasoning
In 1867, Peirce's "The Natural Classification of Arguments", hypothetical inference always deals with a cluster of characters (call them "P′, P′′, P′′′," etc.) known to occur at least whenever a certain character ("M") occurs. Note that categorical syllogisms have elements traditionally called middles, predicates, and subjects. For example: All "men" [middle] are "mortal" [predicate]; "Socrates" [subject] is a "man" [middle]; ergo "Socrates" [subject] is "mortal" [predicate]". Below, 'M' stands for a middle; 'P' for a predicate; 'S' for a subject. Note also that Peirce held that all deduction can be put into the form of the categorical syllogism Barbara (AAA-1).