In this interesting book, Martin Ford looks at the qualitatively different nature of modern technological change. He takes the line that fast advances in processing power are allowing computers to encroach on "humans only" areas, firstly as expert assistants and subsequently as autonomous agents. In other words computers initially help the pilot fly the aircraft but eventually take over the controls themselves.
He particularly sees skilled work being automated to generate unemployment among professional groups like architects, accountants and lawyers and considers the economic cost of this demand (income) being removed from the economy.
The author sees advanced automation as something very new and highly recessionary and in the last two chapters casts around for ways to put the lost demand back into the economy. He doesn't seem very convinced with his own answers (which don't in fact seem very realistic) but he suggests a new government run welfare system taxing successful automated business and returning the automation surplus to the unemployed in return for attainments in education and protecting the environment (his green lights in the economic tunnel).
He doesn't consider the obvious idea of letting the owners of automated businesses keep their surplus but obliging them to spend it rather than taxing it away. The direct effect on demand would actually be enhanced as the government is removed from the equation but you could describe the recipients as purple lights as they may be supporting a new feudal system around the vast spending of a few technology "aristocrats" presumably building new Versailles'.
In the appendix he looks at the hard AI result that is bound to arrive at some point and says, "These visions include things such as truly intelligent machines and advanced nanotechnology that would allow us to transform matter..." when he could of course have said, "...allow them to transform matter...". They are intelligent after all, and a purely human centric view would be inadequate.