*The game is played only once so that reciprocation is not an issue*.
http://en.wikipedia.org/wiki/Ultimatum_gameSo, in this case,
I reject all proposals, where I get (50% - x), if x > 10% of total sum, i.e. if can't call a proposal to be roughly honest (50x50).
Note, if you select another strategy, it simply designates that you are in need of money, i.e. you feel some kind of poverty.
If you live in sufficiency, you will focus upon justice only.