Originally Posted by Zeno
Where does shaking hands as a form of greeting come from?
Who were the first to do it as recorded in history and why?
Do other primates shake hands?
As mentioned, if a hand is extended it shows you have no weapons.
Its also a more socially acceptable way for the men of the time to size each other up from the strength of their grip, how dominating they are in their grip and so on.
As for the toga, no they dont have sleeves but they are specifically designed to be utterly useless. Thats not an insult, a toga has no practical function, it will fall off if your not careful so it proves that your one of the intellectual elite who can afford to wear non-practical clothing because you never need to raise a finger to work.
Generally speaking you need one hand to keep the damn thing controlled and not falling off, the other hand is is free for gesturing in oratory or whatever, if your shaking hands it kind of limits the chance youve got a dagger hidden away because the other hand is probably holding your clothes on.