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Marshall Brain wrote the very interesting (IMHO) "Robotic Nation" in the exploration of your question:

http://www.marshallbrain.com/robotic-nation.htm

And, to save time, here are the standard HN responses:

1. Marshall Brain commits the Lump of Labor Fallacy (http://en.wikipedia.org/wiki/Lump_of_labour_fallacy): The lump of labor fallacy holds that the total amount of work is fixed. This is considered fallacious because increasing productivity also increases the size of the economy, thus creating new jobs in the process. IOW, the total amount of work is not fixed.

or

2. The industrial revolution destroyed all sorts of jobs (of say, craftsmen), but ended up employing as many or more as factory workers. Similarly with the information revolution. Etc... All of these out of work truck drivers will become... massage therapists.

My critique of the lump of labor fallacy argument is that it seems to hold as long as our ability to consume can keep up with productivity gains. But what if there's a natural ceiling to our ability to consume; what happens when we produce more than we can consume? Or, when luxury ephemeral goods become trivially cheap (say, watching YouTube videos).

I'm not an economist, so I strive to remain agnostic on this question, but it still seems far from settled to me. Even if you believe that things will eventually shake out and workers displaced by automation will find new jobs, we still may be in for an uncomfortable period of high unemployment and disruption as the economy adjusts. (AKA, productivity shocks.)



I've argued that the Lump of Labor fallacy fails because it considers workers to be more fungible than they are. It is possible to create jobs for which no one in the existing unemployement pool is qualified to fill. That is a structural unemployment of 0%.

When that happens competition for the qualified labor goes up, and salaries rise in response. While the structurally unemployed[1] remain so and remain poor. This leads to a building disparity between rich and poor and that the problems such a disparity creates are quite well known.

[1] 'structurally unemployed' refers to a person who is unemployed and unqualified for all of the employment opportunities in their area. It comes from a similar concept 'structurally fired' where a company removes the positions that are held by current employees without creating other opportunities.


Curiously enough, though, all of Europe and the US has seen more or less the same kind of development of this kind in recent history. Yet the disparity between rich and poor differs widely between those countries, and it has also gone up and down quite strongly over time.

This is very strong evidence that the kind of disparities you mentioned are not truly structural. The "structural argument" is just a decoy used to prevent the disadvantaged from asking inconvenient political questions.


Sweden actually has higher unemployment than the US, but less wealth disparity, because they have a better social support net for the unemployed.


Exactly. It is about political choice, not about structural inevitabilities.

Actual numbers: http://www.wolframalpha.com/input/?i=unemployment+rate+swede...

It looks like Sweden merely caught up with the US in terms of unemployment in the last 20 years.

Look at the quite drastic ups and downs in unemployment in Sweden in the 1990s. I know that's not exactly what you wrote, but does that look like something that is driven by "structural changes"?


You're picking some bad examples for future growth. Instead, look at the problems people really want to solve.

I'd pick health care as something that's just going to keep growing. As long as people have health problems, there will be a market for attempts at solutions. As the rest of life becomes more affordable, more money can be spent on this.


Advancing technology might eliminate some diseases, and make treating others trivially easy.

Note that nobody dies of smallpox anymore. That disease no longer exists in the population, it has been eliminated. IBM Watson will (eventually, kinda does now) automate diagnosis. Respirocytes[1] would eliminate decompression sickness, and make it pretty hard to bleed to death, with a medic handy. A Vasculoid[2] would eliminate bleeding entirely, as well as blocking all blood-borne diseases, by the simple expedient of replacing blood with something else.

1: http://en.wikipedia.org/wiki/Respirocyte

2: http://jetpress.org/volume11/vasculoid.html


Well okay, in the really long run, perhaps health care will someday be a solved problem. But that's not going to happen without lots of market growth and investment in the meantime.




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