[Laakeri]

I read the essay, and my takeaway to "There are for example four fundamental forces. Are we going to find another four?" would be:

Maybe not, but we could find out that the model of fundamental forces wasn't really the final answer, and explain the universe much better with some alternative theory. In your comment you assume that science is more or less settled, and all there is to do is to tweak the present understanding a bit and fill some gaps. The same sentiment was shared by many prominent physicists already in the end of 1800s, who were obviously proved wrong by Einstein and others in the 1900s.

[jl6]

I tend to agree that rumors of the end of discovery have been greatly exaggerated, however in the case of theoretical physics, we have the unsatisfying problem of having several alternative theories, but severely constrained access to the energy/technology required to test them.