  We survey a variety of possible explications of the term "Individual Risk."
These in turn are based on a variety of interpretations of "Probability,"
including Classical, Enumerative, Frequency, Formal, Metaphysical, Personal,
Propensity, Chance and Logical conceptions of Probability, which we review and
compare. We distinguish between "groupist" and "individualist" understandings
of Probability, and explore both "group to individual" (G2i) and "individual to
group" (i2G) approaches to characterising Individual Risk. Although in the end
that concept remains subtle and elusive, some pragmatic suggestions for
progress are made.
