Some business groups even have marriage counselors who help young employees find mates from within the keiretsu.

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Human ancestors evolved to find mates that would pass on good genes to offspring, so they would naturally be repelled by traits that would be detrimental to survival or indicators of poor health.

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The play, directed by Sheffield Theatres artistic director Daniel Evans, stays true to the tale of the unemployed Sheffield mates who find themselves on the scrap heap of life after their factory shuts.

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Students coming back to UK universities from gap years abroad will find that their friend lists include mates from Somalia, Siam and Syria, and anyone with even a passing interest in global politics will find that their friendship networks cover the globe.

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The 24-year-old had to check occasionally with his better-sighted team-mates, practicing on either side, to find out whether his arrow had found its mark.

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And that's why BBC Radio 5 live embarked on a journey to find out more, speaking to his friends, team-mates and those who come from the same neighbourhood in Liverpool.

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And some kids find themselves spending Christmas in a different town, miles away from their mates.

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Jenkins, his team-mates and Welsh rugby's ever-hopeful but so far disappointed fans will find out soon enough.

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