Konstantin Ciolkowski's father was Polish.
Sergey Brin was born in Moscow. Father is a Russian Jew. Mother is Russian. Let's assume that Google is a product of the Russian intellect?
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Your approach, based on the analysis of the origin and surnames will not work. Because there are practically no Russians in this approach

Like Americans, by the way

Although there are far more native Americans left than native Russians, because America is engaged in the remelting of nations much less than Russia.
I have previously quoted a historical anecdote:
Emperor Nicholas I once at a court ball asked the Marquis Astolph de Custine, who fled to Russia from the French Revolution:
"Marquis, do you think there are many Russians in this room?"
"All but me and foreign ambassadors, Your Majesty!"
- You are wrong. This my approximate is a Pole, that's a German. There are two generals standing there: they are Georgians. This courtier is a Tatar, here is a Finn, and there is a baptized Jew.
"Then where are the Russians?" Inquired Custine.
- But all together they are Russian.
Now, this is reality. Actually, the mother of Nicholas I was a German. The mother of the last Russian Tsar, Nicholas II, was a Dane. Lenin's mother was born in a German-Shevdian-Jewish family (although in Russia). Stalin was a pure Georgian ...
I had a familiar Cuban who came to Russia in 1990, to study at the Chemical Technology Institute (we studied with him in the same group). So, five years have passed of his life in Russia. Sometimes, we sit in the hostel, drink, talk about different things. And he will say - "Here we are, Russians ...". We are laughing - "Juan, but which of you is Russian?". He in response - "What, there, at Pushkin grandfather in general was a Negro! And nothing, the great Russian poet! ". And Juan, really, became Russian
I have a friend, a purely Slavic appearance. He counted 11 nationalities in his ancestors, including Greek. And not a drop of Slavic

I myself have a mixture of Russian ("conditionally Russian" - as I mentioned above, it is almost impossible to find pure Russians), Uzbek and Bashkir blood. And even a little gypsy

Another friend who was considered Russian to the devil knows what kind of generation it turns out, grandfather is a Jew. Another friend - that's right half the Jew, half Russian. I, like that, just can not name any of my friends who at least at the level of grandparents would all be "conditionally Russian"
So humble yourself. Or you will have to recognize Tsiolkovsky as Russian, or admit that Russians do not exist as a nation
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Personally, I consider nationality - this is in what cultural environment the child was formed and under the influence of which language his brain was formed as a child.