It's no great wonder if, in the long process of time, while fortune takes her course hither and thither, numerous coincidences should spontaneously occur. —Plutarch. Plutarch's Lives: Vol. II. "Sertorius" Coincidence's the noteworthy alignment of two or more events or circumstances without obvious causal connection. The word's derived from the Latin co- ("in", "with", "together") and incidere ("to fall on"). In science, the term's generally used in a more literal translation, for ex… (More on Coincidence)