i have read an article about this question!# C Q- m: ~; U, q1 r
A man send a carton of eggs and a hen to his own living place,
j# D5 |+ d) S9 R) z( c公仔箱論壇and he realised that the eggs arrived before the hen do!
" p+ X: g. v# d8 n! cThen he claims that eggs come before hen |