根据单一价格定律，相同的资产应该有相同的价格。
According to the law of one price, identical assets should have identical prices.
为了找出有明显违反单一价格定律的案例，他们先搜索了自有价值为负数的例子。
In order to focus on cases of clear violations of the law of one price, they looked for potential cases of negative stubs.
这可称之为安德森定律：数码科技能令到内容的价格下降到零。
You could call it Anderson's Law: Digital drives the prices of content down to zero.
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