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1st: take bridge as an example to introduce the following finance collapse issue. The designers of bride didn't consider the situation that how the footway would react to all pedestrians walking on it. ( some people happen to walk in step—— lateral momentum ——swaying——more ppl change their gait—— dramatic sideway forces—— may lurch ( synchronous lateral excitation)
2nd: in the most of time, when a crisis hits, the financial market can keep stable. However once the biggest players rush to reduce their exposure. Once liquidity falls below a certain threshold, the financial markets can become highly unstable
3rd: taking subprime mortgage crisis in 2007 to certify above SLE theory. House price decreased —— subprime mortgage bonds frozen —— banks can't estimate firms' losses & hoard capital —— immediate collapsed and averted to european market
4th: the real reason behind financial collapse is " rational irrationality". |
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