According to the most widely accepted etymology, French 'hasard', meaning chance, goes back to Arabic 'az-zahr', a die, by way of Spanish 'azar'. In medieval French, 'hasart' was the name of a dice game, before the word broadened to mean luck and the unforeseen. English borrowed it as 'hazard', where it came to mean danger: one origin, two ways of looking at risk.
In Kuşköy, a mountain village in northern Turkey, people talk across valleys by whistling Turkish. A 2015 study showed that whistled Turkish draws on both hemispheres fairly evenly, whereas spoken Turkish relies mostly on the left. The physical form of the signal, it turns out, matters to the brain.
Speech has no gaps between words. In 1996, researchers played 8-month-old babies a continuous stream of made-up syllables for just two minutes. The infants picked out the 'words' by tracking which syllables tend to follow one another. That's probability calculation, done without a calculator or any visible effort.