An increase in the price of a tangible good would typically cause demand to fall, leading the market toward a new equilibrium. By contrast, an increase in the price of an asset like a stock raises expectations of a further increase, causing demand to rise, potentially to excessively high levels.
在自由经济中，市场机制可以制造稳定或不稳定。有形商品价格的上涨通常导致需求下降，促使市场形成新均衡。相反，股市等资产的价格上涨制造出进一步上证的预期，导致需求增加，有可能达到过高水平。