the.com/duality
the idea that one thing can be two opposite things at once, and they're both right
means The condition of having two parts, aspects, or natures—often opposite ones—coexisting in a single thing.
from From Latin 'dualis' ("containing two"), built on 'duo' ("two"), a cousin of Greek 'duo' and English 'two' itself—all descendants of the same ancient root for the number. The abstract noun 'dualitas' gave Old French 'dualité,' which English borrowed in the late medieval period, originally in theological and philosophical writing wrestling with twofold natures—body and soul, good and evil, the two-in-one.
- quantum proof
- Light behaves as wave and particle, depending who's looking
- ancient roots
- Yin-yang dates back over 2,500 years
- two-faced god
- Janus saw past and future simultaneously
- brain split
- Severed brain hemispheres can hold opposing opinions
- math twin
- Every geometric shape has a dual that mirrors it
wave particle duality — light exhibits both wave and particle properties simultaneously, fundamental to quantum mechanics
yin yang — ancient chinese symbol representing complementary forces in taoism, found in the taoist flag
day night cycle — earth's 24-hour rotation creates perpetual coexistence of light and darkness on opposite sides