Arrow's impossibility theorem proves no voting system can satisfy all fairness criteria simultaneously.

Sound travels about four times faster in water than in air.

Fact #2630 · Technology

The Apollo guidance computer had less power than a modern calculator.

Fact #2763 · Technology

People in happy relationships tend to have better overall well-being.

Fact #2903 · Technology

The first programmable digital computer was Z3, built by German engineer Konrad Zuse in 1941.

Fact #4395 · Technology

Volcanic eruptions can release ash clouds that disrupt air travel.

Fact #811 · Technology

Julius Caesar was once kidnapped by pirates, and after his ransom was paid, he returned and had them all crucified.

Fact #4162 · Technology

Airplane black boxes are painted bright orange for visibility.

Fact #2753 · Technology

NASA's Apollo guidance computer had less processing power than a modern USB charger.

Fact #3941 · Technology