Than there's the emerging invisible economy in which everything is determined by supply & demand, but also contracts that are per se, not "enforceable", and where reputation matters. That where people can find jobs in spite of the structural deficiency in the wider economy that forbid the price floor for labor to drop to where it needs to be. They are happening now.
But there's the past record in which new jobs are created out of jobs being eliminated by robots. There are demands for humans to program them, probably repair them, and so on. It might happen again with this process of industrialization.
There's another factor: prosthetic that effect a superhuman attribute or merging of humans into machines. It seem to take forever right now, though. This could be simply be our linear point of views, but not the actual development rate.
But then again, whether or not we have jobs in the future is not determined by what arguments I make, but of the facts.
100 IQ is defined as the average in the population under study, therefore increase / decrease is impossible.
By our standard, most people 100 years ago would be classified as retarded. Thus, what I meant by increase in IQ is in relative to past populations.
An errors? Perhaps, but that's nitpicking.
That's of course, when only industrialization is the only factor. When you factor in all the other technological factors and social trends, the picture will begins to look different, if not radically so.