A closer look
Finding a crumpled twenty-dollar bill on the sidewalk rarely inspires long-term savings; it merely upgrades your immediate sandwich order. The income effect ensures that small, sudden bursts of purchasing power are almost instantaneously converted into tiny, elevated comforts. Instead of sensibly altering their long-term trajectory, the lucky pedestrian simply adds premium avocado and an oversized drink to their afternoon routine, brilliantly evaporating the windfall in mere seconds.
