Ferris Jabr, writing for Scientific American:

Lia Kvavilashvili sat in her office at the University of Hertfordshire, mentally reviewing a study she had recently published. She knew that there was a particular statistical measure that might have been useful in the study, but she could not remember its name. Frustrated, she got up to make a cup of tea.

Suddenly the word “hurdle” popped into her mind, unannounced, uninvited. Kvavilashvili—who grew up in Georgia speaking Georgian, Russian and Estonian, and only started to learn English at age 13—had no idea what “hurdle” meant.

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