“The technologies of the past, by replacing human muscle, increased the value of human effort – and in the process drove rapid economic progress. Those of the future, by substituting for man’s senses and brain, will accelerate that process – but at the risk of creating millions of citizens who are simply unable to contribute economically, and with greater damage to an already declining middle class.”

Source: hbr.org

The final paragraph: “Ultimately, we need a new, individualized, cultural, approach to the meaning of work and the purpose of life. Otherwise, people will  find a solution – human beings always do – but it may not be the one for which we began this technological revolution.”