As Elliot Jaques (1982) pointed out in his overview of psychoanalytic views of the experience of time, it is important to keep in mind the difference between objective time as a scientific concept characterized by the uniformity of linear intervals as defined by the units of measurement of time, on the one hand, and the subjective sense of time, that has very different characteristics, on the other. The subjective experience of the duration of time is irregular and depends on multiple psychological factors.