Airlines and airplane manufacturers are also focusing on giving passengers more space and a greater sense of privacy, and on offering them more choices in how they spend their time aloft.

WSJ: Airlines Promise the Flying Experience Will Get Better

It can give you a sense of control, of purpose, it can shake up your perception of time, offer the space to expand cultural horizons and allow the kind of relaxed break everyone needs to refuel.

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In his book The Highland Clearances, Prof Eric Richards said the resettling of large numbers of people in a relatively short space of time caused dislocation, "psychic wounds" and a "sense of wrong" that was passed down generations.

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