People are still addicted to Rubik's Cubes

In the 1980s Rubik's Cubes seemed to be everywhere, but there are still legions of people obsessed with the coloured puzzles. The record for a human is 5.55 seconds. A robot can do it in 3.253. Most people - despite toiling over it for hours - have probably never managed it.

But 40 years after its birth, the Rubik's Cube continues to beguile, frustrate and - like a Filofax or Walkman - evoke its 1980s heyday when schools were full of children puzzling over its brightly coloured squares.