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The long-running series in which readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific and philosophical concepts
How can a country’s economy apparently grow year on year without limit, and why is this thought to be desirable?Richard Saunders, Dagenham
Post your answers below or send them (and new questions) to nq@theguardian.com. A selection will be published on Friday. Continue reading...