There's a serious flaw with this article. It's relying on a mythical or fantastical realm of jobs whereas in the Industrial Revolution,anyone with intelligence could very well imagine what jobs we could do if we improved technology in farming.
We can imagine what jobs robots could possibly do. It's how robots are invented to perform those jobs. Perform surgery? Consult patients? Make sound decisions that benefit a large group of people?
With enough programming of knowledge and statistics, I can easily see robots performing those jobs.
And once robots do, there will be no jobs left for lower level workers. If we're honest, we can admit that working a career as a cashier at a fast food joint if merely a way of placating the peasant class. It's a motivation tool for those that could make life hell for those who are wealthy and educated.
In the end, this is about economics and rewarding those who close to better themselves. If robots make all of our goods and do all of our hard work, what else would there be for humanity than to engage in a numbing form of hedonism similar to what Huxley wrote about in Brave New World?