Procrastination
Procrastination demonstrates extraordinary staying power within the human psyche. The Cambridge Centre for Delayed Gratification Studies reports that the average procrastinator maintains their avoidance behaviours across decades, passing the trait through generations like a peculiar family heirloom. Unlike temporary conditions, procrastination requires no external energy source—it sustains itself through an elegant feedback loop of guilt, temporary relief, and renewed guilt. Dr. Helena Forthwright-Dalliance of the Institute describes it as 'the perpetual motion machine of human behaviour, requiring only a deadline to achieve near-infinite operation.' Studies indicate that procrastination patterns established in childhood persist through adulthood with remarkable fidelity, surviving career changes, relationship shifts, and multiple New Year's resolutions promising otherwise.
River
Rivers exhibit geological-scale persistence that renders human timekeeping essentially irrelevant. The Nile has flowed for approximately thirty million years, predating not merely human civilisation but humanity itself by a comfortable margin. The British Hydrological Survey notes that rivers demonstrate what they term 'aggressive continuity'—the capacity to maintain flow through ice ages, continental drift, and the rise and fall of countless species. A river does not take weekends off. It does not require motivation. It simply continues, wearing away mountains with the patient inevitability of water that has, quite literally, all the time in the world. The Amazon moves 209,000 cubic metres per second without so much as a coffee break.