Procrastination
Procrastination demonstrates remarkable consistency across all documented human populations and historical periods. The Nile's seasonal floods were more variable than humanity's tendency to postpone unpleasant tasks. Studies tracking individual behaviour patterns reveal that procrastinators maintain their habits with 85 percent consistency over multi-year periods, suggesting the behaviour operates as a stable personality trait rather than situational response.
The reliability of procrastination approaches that of physical constants. Place any human before a difficult task with a distant deadline, and procrastination will emerge as reliably as water flows downhill. This consistency has enabled researchers to develop predictive models with accuracy rates exceeding 80 percent for task completion patterns. One may depend upon procrastination absolutely; it will never fail to appear when least convenient.
New York City
New York City's infrastructure reliability presents a more complex assessment. The Metropolitan Transportation Authority moves 5.5 million passengers daily with a punctuality rate that varies seasonally between 58 and 80 percent. Power outages, whilst infrequent, have historically shut down the entire metropolis, as occurred memorably in 1977 and 2003.
Yet the city's fundamental character remains astonishingly consistent. New York has maintained its position as America's largest city for over two centuries, surviving economic collapses, epidemics, and terrorist attacks without fundamental alteration to its essential nature. The delis still serve pastrami at 3 AM. The taxi drivers still navigate with aggressive confidence. The rent still exceeds reasonable expectations. In matters of character if not infrastructure, New York proves remarkably dependable.