Why is the subject for programming called "computer science"?  Why is it a "science"?  Science should involve experiment and conclusions based on experiments.  There is a little bit of this in unit-testing and bench marking but it is more like construction or engineering than science.

The end goal *in science* is not to create or build something.  I think the term "software engineering" is more apt.  I think the term "construction" sounds good to me.

Its actually true, everything else asides science are just systems men came up with to organize society and navigate the world. That doesn't mean studying it is a waste of time, it has it's own importance, organizing society as best we could is a really important matter.

Science is "catholic"? 

Catholic means universal. Catholicism rose from within a scholarly movement dedicated to the pursuit of universal truths.

It is strange to see the claim that science is the one universal truth?

I suspect that it is fun to be the arbiter of truth. 

Mathematics and science has fundamental problems with completeness. Scholars have known about intractable paradoxes since antiquity. Mathematicians continue to have problems with the reflexive paradox and absolutes.

For centuries mathematicians felt that Euclidean Geometry was a universal truth.

For the most part science is a collection of constructs. Newtonian physics is a construct that works well for things on the human level. It falls apart when one tries to apply it on really big or really small things. 

Newtonian physics references strange ideas like entropy and gravity without giving an adequate explanation of these constructs.

It seems to me that the thing that made science successful was that most scientists avoid claims to universal truth while contenting themselves with a pursuit of those constructs which most accurately describe reality. 

People who start with claims to universal truths end up stumbling on their individual hubris. Those who accept that they are dealing with fallible man-made constructs tend to actively engage whatever subject they pursue in a more rigorous manner.