On ''what there is''

The question looks ''philosophical'' in the sense of ''what exist?''. In the old terminology ''ontology question''.
The modern formulation (by Quine) is: ''what are the values of your variables''? In our hobby ''what are
the new available components''?  Can one person know what are available components? Obviously not
but we have ''collective knowledge''. Each contribution is welcome. Like in science. But like in science there
are individuals with special contributions. Raul with his MM contributions and his ''successor'' chakster
with his contributions about ''both kinds'': MC's and MM's. Despite his ''modest means''. I think we should
be thankful to have such individuals.