Why will people pay to avoid an urn whose odds they don't know, and how did that same aversion freeze toxic assets in 2008?
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Behavioral finance as a catalogue of biases
Record the rationality assumption behind efficient markets and the CAPM, and list the documented biases: loss aversion, anchoring, framing, overconfidence, overreaction, herding and mental accounting.
Sure gains versus sure losses
Write the gain choice A versus B and the loss choice C versus D, record the popular picks A and D, and state that B and C together equal A and D plus $10,000.
Urn A versus Urn B
Describe both urns and the $10,000 bet, compute the $5,000 expected value for Urn A, show that a coin flip makes Urn B's win probability one half, and record the discount people still demand.
Toxic assets in 2008 as Urn B
Record the parallel between the unknown urn and balance-sheet assets with no trading market and unanalysable structure, and the refusal to deal in them in autumn 2008.