http://re.i2p/main/limits-of-the-system_en
Modern studies, for example those conducted by a French economist Thomas Piketty, show that even a stable, but low, growth rate of 1-2% exposes old problems first pointed out by Marx. These issues may take different forms now than they did more than a hundred years ago, but their core, defined by the inner workings of a free market economy, remains the same.