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Watch this fascinating video of people from all walks of life telling the camera their age, from babies to OAPs!
In October 2011, Jeroen Wolf began documenting people in Amsterdam, approaching them in the street and asking them to say their age in front of the camera.
It took Wolf four months to find all the people in the clip and to complete filming for '100 (5050 years in 150 seconds)'.
Watch the extraordinary video below: