As machines have the power and the control system in hands today, we could consider that humans handling them are much more productive at all levels. There is a common belief that low-skilled workers less productive because of a so-called “replacement” whereas the high-skilled would be the most competitive. Thus, these are the ones capturing wealth. But, with all these machines in their hands, the cashiers, the car-drivers, the hostess, etc. have to handle tasks that are more and more complex, frequent, intense, and are also much more productive then before. Hence, the question would be: how do we define better the jobs, build objective indicators of productivity, so that the income from wealth is distributed at all levels?
Read Philippe Askenazy “Tous rentiers!”: http://www.laviedesidees.fr/Richesse-pour-tous.html