Romans fattened geese on figs to get a rich liver, called 'iecur ficatum', fig-fed liver. Over time, 'ficatum' alone came to mean the organ itself, first in animals and then in humans, and wore down into the French 'foie'. Italian 'fegato' and Spanish 'hígado' share the same origin. The original Latin word for liver, 'iecur', was simply pushed aside.
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.