Some
risk is zero-sum that there are only two kinds outcomes and one of
the two is zero (losing everything). Under such risk environment,
participants usually have more risk loving preferences in order to
allow themselves to be in such situation. Such situation is usually
related to gambling or similar activities. However, it is not
necessary to consider such risk is “bad”, as under good
management of risk, it could lead to positive expected outcomes and
the losses could be lower than people’s bearable budgets.
When
we are calculating expectation outcomes for future events, it usually
involves these several elements: possible states, probabilities,
discounted rates. However, if we believe any investment other sources
of incomes should be spent on consumption for now and future.
Therefore, once we design our investment and consumption plans, we
have to ensure the lowest expected outcomes should be higher than the
highest possible overall consumption; otherwise, we put ourselves in
conditions where we are possible to bankrupt.
To
us, discounted rate and future consumptions are also sources of risk,
as they are uncertain and not entirely controlled by ourselves. As we
are more able to control our consumption than the discounted rate as
discounted rates are determined by exogenous factors, the discount
rates for the future could be seen as a normal distribution that its
future outcome could be any within a range.
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