i have read an article about this question!
. }0 V( `- e9 Z8 C; g公仔箱論壇A man send a carton of eggs and a hen to his own living place,
( @7 O. d- |* d8 m' E& l1 J7 d/ K公仔箱論壇and he realised that the eggs arrived before the hen do!: G8 p5 J, A2 g, H# p( K" `
Then he claims that eggs come before hen |