1) If you're "excluded" from science, that actually makes you pretty similar to the leading Natural Philosophers who, during the Enlightenment, figured out a massive number of things that make up our current understanding of the world. Physics, math, chemistry - done by outcasts and losers, for the most part.

So go do your own science. Nobody is actually stopping you.

2) Whiteness is a new thing, yes, just like "blackness", "asian-ness" and even "jewishness", as the latter covers a pretty wide range of people from Slavic-Russian Jews who speak Yiddish to Hebrews and Ashkenazi and so forth. There's still meaning here, as it's a label applied to the locus of a clinal group of related genetics.

The US Census form is hardly a fucking reference for what people actually think of as White. Look at the crime mugshots of people labelled White who are clearly not at all white by any sane standard to understand what I mean here.

3) Blah blah, show me the evidence of someone else in some other part of the world independantly coming up with the same idea and I'll happily accept it; won't change the facts that the lion's share of contributions to mathematics and science have been made by white people over the past few thousand years. And yes, we'll claim the ancient Greeks and Romans as white, as that's only ~2500-3000 years ago, while the separation of races was >10,000 years ago.

4) Congratulations to the Arabs for inventing the zero and some algebraic ideas. Pity you burnt down your libraries and gave birth to the worst religion known to man. Shame about the shredded IQ in favour of warlords and conquering. Maybe you'll climb back up out of that cultural gutter in another few hundred years.