Mr.Smith lived in the country, but he went to work in a big city every morning, by the same train.
One morning a man was sitting behind him ,that he had never met before, leaned towards him and he told him he was leading a repetitive life because he was doing the same thing every day: he always took the same train, at the same hour, bought the same newspaper and he sat on the same seat. Mr.Smith asked the man how he could know all that about him, the man answered he tooked the same train as Mr.Smith did and he sat on same seat behind Mr.Smith's.