Incommensurability problems(as the core challenge of Bentham's system)
Difficulties that arise when trying to compare things that can't be measured on the same scale—like trying to decide if an hour of intense joy is worth more than a week of mild happiness.
Intensity(one way natural and supernatural cognition might differ)
The degree or strength of something; here, how powerful or clear the knowledge is.
duration(Bergson's conception, illustrated via the spool-and-tape image)
Continuity of progress and heterogeneity; the prolongation of the past into the present.
fecundity(One of Bentham's seven parameters for quantitatively measuring pleasure in the felicific calculus)
A parameter of pleasure referring to its tendency to produce further pleasures
propinquity(Contrasted with remoteness in Bentham's felicific calculus)
Nearness in time; a parameter measuring how soon a pleasure will be experienced
purity(One of Bentham's seven quantitative parameters for measuring pleasure)
A parameter of pleasure in Bentham's calculus; implied to concern the degree to which a pleasure is unmixed with pain