plural of sorites paradox

plural of Zeno's paradox

plural of twins paradox

plural of clock paradox

plural of Abilene paradox

plural of St. Petersburg paradox

(astronomy) The observation that the night sky is mostly dark, yet, in a boundless universe of stars, every line of sight from the eye must eventually intercept the surface of a star.

(relativity) The phenomenon in which two observers who start together with identical clocks, follow different timelines, and then rejoin can have different elapsed times on their clocks, especially if one travels at a relativistic speed.

(relativity) The clock paradox.

The perceived failure of European countries to translate scientific advances into marketable innovations.