In our text, culture is compared to something we study in business:

Thus culture, like helps individuals understand the rules underpinning how things are done in any particular situation. Without a minimum of shared cultural values, attitudes and expectations we simply could not engage successfully in day$-$to$-$day life. Faced with ambiguity and uncertainty about how people are going to behave in a particular situation we would begin to doubt what we know to be true of the world.

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