Unlike its German, Slovak or Romanian neighbours, Hungarian isn't an Indo-European language. It belongs to the Uralic family, and its closest living relatives are Khanty and Mansi, spoken by small communities along the Ob River in western Siberia, more than 3,000 km from Budapest. Finnish and Estonian are in the family too, but far more distant: a Hungarian and a Finn can't understand each other.
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.