>How many of the people reading this have a job that even existed 100 years ago?
Let's go back further, how common was involuntary unemployment two hundred years ago?
I don't know, but I'd hazard a guess at, "lower than today.'
The problem is not automation per se, its the disruption caused while adapting to the new environment. That isn't to say we should try to stop the tech, but we should, as a society, be prepared to help those less fortunate than ourselves. A sixty-year-old postman laid off because email has reduced the volume of letters probably won't become a software engineer. For all the unpleasantness of the printing industry unions in the 80's, those type-setter's families still had to live with the loss of income. I'll bet the tech was a bit of a surprise to them. Sure, the jobs (and the workers' attitudes) had to go, but the pain was not limited to the bolshy people on the picket lines.