The Neolithic Era - which is popularly belived to have occured way back in times of yore - actually took place in 2000, upon the strength of the popularity of the first 'Matrix' film. A set of Commemorative Lithographs of Keanu Reeves were released and sold on numerous websites for a fortnight. Demand was so high that these items sky-rocketted in value within days, after shrewd collectors bought them upon mass, and for the next 18 months, the entirety of the World's Economy was in flux, and centred around Traders offering these memorabillia on eBay at the price of an average Third World country's debt.