fred, well, you're working the probabilities. the expectation is the same as if you knew for sure that you shared 1/2, because in an evolutionary sense you're iterating over the population.
wena TERRY, careful. i wish o ka diragalelwa ke something like that n ke gone o ta itseng gore this things di a tshela. hope o itshireleditse ka morena. otherwise your chances are 200% possible go iphithela into a same situation.