A vicious circle of price rises, stockpiling and export bans does not make sense in the medium term for any commodity, whether cotton, Onions or iron ore.

中期来说任何商品不论是棉花，洋葱还是铁矿石陷入价格飞涨，囤积居奇，禁止出口的恶性循环都不可行。

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Rather, control and purpose are purely logical processes that can emerge in any sufficiently complex medium, including that of iron gears and levers, or even complex chemical pathways.

其实，控制和意图是纯粹的逻辑处理程序，能在任何足够复杂的介质之中涌现，包括铁制齿轮和杆件，或者更为复杂的化学路径。

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Medium size grand piano with complete cast iron plate and very rigid rim made by many layers of hardwood.

中型钢琴完全铸铁板和非常严格环了许多层次的硬木。

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Among the alleged baits recently used to separate unwary investors from their funds: film deals, 19th-century railroad bonds, gold mines, iron mines, equipment leases, "medium-term notes, " greeting card manufacturing, a board game teaching investors how to get wealthy and even Mormon church financings.

FORBES: Fraud per capita

In a sense, salt is merely reasserting its historic role as a medium of value: Ancient Chinese economies were based on it (and iron).

FORBES: Salt Chic