Making Life Decisions: appraising cost, risk and expected value, with limited information about the future

The dice games are simple parallels with the type of decision we take every day in our lives.  Investments offer the most direct comparison.  With a limited sum to invest, you have to evaluate the probability of making a profit, the expected value and the risk involved for each investment alternative.  And, as with the dice, you hve the alternative not to play, which is 100% safe, but will not make you any money.

We make other kinds of decisions too, where the investment is not always financial:

• selecting a savings account (which will make you richest in the long term?)
• buying a house ( will prices fall or rise?)
• deciding which people to socialise with (who will turn out to be better company?)
• renting a film to watch (which will you enjoy the most?)

However vaguely or subconsciously, we are appraising cost, risk and expected value, with limited information about the future, all the time - even if the only cost is our leisure time, the only expected value a fleeting enjoyment, and the only potential loss a mild feeling of irritation.