i have read an article about this question!公仔箱論壇0 t4 W: a |# r5 ~& c& k
A man send a carton of eggs and a hen to his own living place,; T( g1 J0 F) S! q7 w- y. s
and he realised that the eggs arrived before the hen do!tvb now,tvbnow,bttvb- [+ h& V" M1 |2 L) | O
Then he claims that eggs come before hen |