He discovered that these people worked in the pub at 7 Cambridge Street. They had been given free beer and so had not drunk the water from the pump.

他还发现，这些人都在剑桥街7号的酒馆里打工，而酒馆为他们提供免费的啤酒喝，因此他们没有喝从宽街水泵抽上来的水。

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Diageo found creative ways to trim the price, by using local barley and sorghum, by putting the beer in big kegs rather than costly bottles and by inventing a cheap hand-pump to serve it.

ECONOMIST: Schumpeter