As an economist, I think that we may be overreacting. This ideas are not new and the same arguments were used from the 18th century to now in times of tecnological revolutions.

Economic history teaches us that innovations, in short run, inevitably displace some segment of workforce. But, on the other side, more than 40 percent of jobs in leading economis were replaced by other jobs in less than a 80 years. There is no reason to believe that this won't happen again!