How did the Nazis figure out whether a person or community is 'Aryan' or not?

Nazi racism was not actually scientific, it was just a load of bullshit with a thin patina of “science-y” garwharbl to justify what was basically a totally ideological belief.

If the Nazis wanted someone to be “Aryan”, they made up some cock and Bull story to justify it. If they wanted the opposite, they could be equally inventive in assigning someone to “Untermensch” status.

And then we get sexy time with them!

A rare shark is seeking refuge in Miami's Biscayne Bay. Here's why scientists just spent 8 years tracking it - BBC Wildlife Magazine

Ja, well, Helmut, it’s very simple. Those hot leggy blondes are actually not Slavs at all but are, in fact, Aryans who got Slavicised. We need to rescue them from the pit of subhumanism that surrounds them by immediately giving them Aryan status!

They used their “spidey sense”.

And then we get sexy time with them?

Since the rise of feminism, the dating market has shifted to the disadvantage of men and that is causing this incel phenomenon. Why do women not understand how lonely the majority of men are?

Poles are “ugly, subhuman Slavs” but hey, Hermann, have you noticed how hot and blond those leggy Polish chicks look? They don’t fit our “subhuman” model at all! İn fact, they kind of look like our Aryan ideal personified!

Ultimately, what made a group of people “Aryan” or not came down to how much they wanted them to be “Aryan”.

It was all bullshit the Nazis made up as they went along. Trying to cast it in real scientific terms is a waste of time.

How do romance scams typically operate? Do they always start by asking for money or do they sometimes begin with personal questions about the victim's life?