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The problem is all this could become otiose if Donald Trump imposes huge tariffs on Chinese imports and triggers a global trade war.

Insisting that every branch also have a vault and a cash-handling teller would be otiose, Torstendahl told me, especially given the sharp decline in cash transactions in the past decade.

But when Chairman Mao Zedong unleashed his socialist society, dog ownership, like golf or capitalism, was regarded as an otiose affectation.

His own girl sat sprawled out gracelessly on an overstuffed sofa with an expression of otiose boredom.

Ludicrously, it was binned in favour of a hammy and otiose version of the Beatles’ Across the Universe.