The trial did not meet its primary endpoint, a joint rank analysis of function and survival, and no efficacy was seen in the individual components of function or survival.

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The clearest explanation is that the sales rank is basically a function of last sale.

FORBES: The Amazon Book Jungle

Since ancient Egypt, if not long before, hats have served the practical (protection against heat and cold) and the symbolic (religious function, military rank, social status).

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The ability for content to rank high on searches becomes a function of relevance, value and impact.

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Earning this merit is no longer a function of title and rank but rather of effectiveness and perceived ethics.

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