In 2007, global investments in R&D have increased by 7% on the previous year and have reached an absolute historical peak, exceeding for the first time the threshold of 1,100 billion dollars (calculated in the hypothesis of a purchasing power parity between the currencies). The world invests in scientific research and technological development 2.1% of the wealth it produces. At the same time, there has been an increase in the exchange of high added-knowledge value goods and high tech represents now the most dynamic sector of the world economy.