Two journalists are Lapport the inventory of new (since 1930) technologies. It includes The assessment of the disorders, the causal paradigm shift to correlations, an inventory data around us associated with the concept of data value. After evaluating our involvement in this revolution, a risk analysis and the necessary control of Big Data. Examples and journalistic stories (Fin. Times). Stories and interesting tales, a little older, there are better aujoudhui. Rather redundant, not very critical. No explanation of technology, attitude of "delighted". A little thick for an introduction. Very good translation.