Recurring themes across speculative manias
Chancellor traces themes that recur across the South Sea, railway, 1929, Japanese and 1990s episodes, often including a new technology or market promising transformation, easy credit, and a growth story whose payoff lies too far ahead to check. These elements appear in varying combinations rather than as a fixed set of conditions, and changes in accounting or disclosure practice feature in some episodes but not as a common thread in all of them. Where they coincide, they help prices drift away from verifiable measures of value.
