the.com/spillover
the moment a thing forgets the line you drew around it and just keeps going
means The process by which something — liquid, an effect, a crowd, an emotion — extends beyond its intended container or boundary into an adjacent space.
from A transparent English compound of "spill" + "over," built on the same logic you can watch happen at a dinner table when a glass tips. "Spill" descends from Old English "spillan," meaning to destroy, kill, or waste — only later softening into the gentler sense of letting liquid escape. "Over" is the ancient Germanic word for above and beyond. The literal noun is old, but the figurative "spillover" — effects bleeding into other domains, economies, ecosystems, conflicts — is a 20th-century habit of speech, fond of treating consequences like liquid that won't stay in its cup.
- viral origin
- most pandemics start as animal-to-human spillover events
- economics
- your neighbor's solar panels lower your costs too
- named effect
- spillover describes benefits or harms escaping their intended target
- ecology
- wildlife thrives where reserves leak into surrounding land
- the brain
- learning music spills over into better math skills
covid-19 pandemic — sars-cov-2 jumped from animals to humans in wuhan, china in late 2019, infected 700+ million globally
hiv aids epidemic — simian immunodeficiency virus crossed from chimpanzees to humans in early 20th century congo, became global pandemic