It's early in the wee hours of the morning when a lonely farmer loads up his truck with his goods to sell. He lives far from the city and if he wants to ensure a good spot at the bazaar, he will need to leave with haste. The road is long and dull, the farmer sees but a single car driving in the other direction in the early morning mist during the first half an hour. After an hour has passed, the farmer looks out the window and sees the house of an old friend of his and notes to himself, almost as if to calm his own nerves: "I've already covered more than half of the way to the city. Surely I will make good sales today."
The day is hot and winding as the farmer calls people out to buy his goods. At long last when the sun has set, the farmer packs what little remains of his cargo and starts to travel back home. Lighthearted and in good mood, he can barely notice the time passing until he sees his friend's house again, saying to himself, "Oh my, I've already covered more than half the way! Surely I can get home early today."
The farmer drove with the same speed both in the morning and in the evening. How is it possible that he had passed more than half the way on both times when reaching his friend's house?