Elon Musk, second-generation immigrant from South Africa. Steve Jobs, second-generation immigrant from Syria, was adopted and raised by his foster parents. Brin, second-generation immigrant from the Soviet Union, only set foot on American soil at age 6.

These three individuals have supported half of human technological history.
Putting the same background into the domestic context: no household registration, can't attend good schools; no problem, can't get into key middle schools; after high school graduation, either work or attend a vocational college — then be nailed down by educational discrimination at that level.
What makes America stand out? It's not the most resources, but that it doesn't care who your father is.
The ceiling of social class, sometimes it's not ability, but the paper you were born with. 🌍