IQ test results improving does not in anyway suggest that intelligence is increasing.
Ok you just keep your opinion. The whole planet think that it does.
No, the whole planet doesn't think that. Quite a lot of work, for example, goes on in examining the role of infectious disease, public health and sanitation in raising test scores.
The Flynn effect is seen to vary between nations, and tracks fairly well to GDP increases as well. And the effect seems to be coming to a halt in the most developed nations, while still being observed in developing countries.
All it's really showing is what has been suspected all along: that IQ tests, whatever it measures, includes at least a bias towards environmental factors that allow for early childhood development.
It in no way shows that we as a population are getting more intelligent. Rather, it shows that we as a population are letting fewer of those at the bottom remain there.
What's a book?
A collection of sheets of paper, usually there are pictures in it.