I've just been reading "How We Know What isn't so" by Gilovitch (sp?) and found out where the oft quoted "over 50% of marriages end in divorce" comes from. It comes from people dividing the number of divorces by the number of marriages in a given year! It seems to me with this logic, we could divide the number of deaths by the number of births in a given year to get the probability of a birth eventually ending in death. Thus, we may find that something like: "52% of all births will end in death"!! This is great!!, I always thought it was 100%.
(From the "Rest" of RHF)