The jobs being done
today perhaps.
In practice you see that as automation increases, it just makes the surface area of the market larger. It's hard to see this going forward, but easy to see if you play technology in reverse.
Lets play it in reverse and create jobs by eliminating technology. Lets make vaccuum cleaners illegal. Now more people will be needed to clean carpets in all the office buildings etc... What effects would this have?
1. All the people manufacturing vaccum cleaners would be out of work (minus a small number of jobs)
2. Tons of low skilled labor would now be employed as carpet cleaners (plus a large number of jobs temporarily)
So we declare victory right? Wooo More jobs! Except for...
3. People and business who can't afford to employ large numbers of carpet cleaners just rip out the carpets. Over time it becomes the norm just to not have carpets. Only the wealthy have carpets as a status symbol. (minus carpet installers jobs, and carpet cleaning jobs over the long term)
So at the end of this experiment we end up roughly a wash in total job numbers, and we have to walk on cold floors. It's similar to the parable of the broken window.