Pursuant to the question below about 伴：
What intrigues me is what 8 八 and a cow 牛(or 2 cows) have to do with this?
chineseetymology.org says for 半: 'Augmented pictograph 半. Augmentation 八 (indicating separation) and cow 牛.' （WTF is an 'augmented cow??)
zhongwen.com says 半: divide 八 an ox 牛 (share it? cut it up??)
We see what looks like 2 people to me, but the dictionary says it is 2 times 半， = 八 (8 or divide) and 牛 (ox, cow) twice. Later we see 伴 as 人 + 半 Maybe on a notion of 'a man's best companion is his cow?' （In ancient times I think, a cow was regarded more valuable than a wife, at least in many societies.)