Related:

"... Thus there is a 1.8% chance that none of the molecules you are (still) holding in your lungs came from Caesar's last breath. And there is a 98.2% chance that at least one of the molecules in your lungs came from Caesar's last breath."

--John Allen Paulos, Innumeracy (1988) [1]

[1] http://econ161.berkeley.edu/movable_type/archives/001392.htm...