The dates hazek picked in
https://bitcointalk.org/index.php?topic=118063.0;topicseen are interesting, they correspond with the rise of socialism in Europe (and, I'm assuming, the US too) due largely to widespread poverty and unemployment and a large part of that was caused by the situation Etlase2 warns of, the hoarding of a fixed amount of currency.
However, the reason for that has to be considered too. At that time industrialisation was booming, in many areas 1 man could do the work of 100 of a previous generation which goes a long way to explaining the mass unemployment and the mass poverty that came with it.
Move forward to the present day and in many areas 1 man can do the work of 10000. We need to work to earn money to survive so new areas of employment have evolved for us to find work in and welfare systems have been put in place to provide protection for those that would otherwise starve.
The obvious next step is to build on that system, to create new industries providing further employment and dismiss past systems as obsolete, never questioning the foundations of the system.
We need to work to earn money to survive. Is this really true any more? We've maintained that fundamental principle continually and built a huge and complex system to support it including a welfare system that has grown bigger and bigger as that system became harder to maintain.
The welfare state was discussed at length in another thread recently and the impression I got from that discussion was the concept is simply too alien to our way of life to clearly see how it would function and I think the concept of an economic system that isn't based on creating growth (and with it employment) is also too alien to see clearly. Money is the central component of our lives, this hasn't always been the case but I think it has been true for too long for us to see anything else as possible.
+++, lot's of good points in your post
Technology advance will always create unemployment, especially it happened on all the existing industries, IT's usage on existing industries created mass unemployment throughout the globe
In an ideal world, new consumption should increase steady and continuously, so that growth is predictable and there will always be new jobs. But in reality, new consumption jumped up exponentially, from cloth to food to car to house, in each jump the value of consumption increased by at least 4 times. During the jumping process, everyone makes money, but what is going to be the next consumption for each household, which is 4x higher value than housing? None, and the most important: income do not increase exponentially, so it collapsed
In many welfare countries, people do not need to work to earn money to survive, the high tax of those nations established good bottom line for everyone. But those companies who is paying the tax will try to move the operation to other countries, unless all the countries create same welfare system
Robot will replace most of the human workers sooner or later, but in a future society when only robot are working and producing, who is going to buy the products that robot produced? Everyone becomes a robot owner, or government owns all the robot and dispatch the work results of robots to each household?