Interracial marriage has been legal in the US for 45 years, but that doesn’t mean people are exactly comfortable with the idea yet. And in many countries abroad, countries that contribute a lot to a movie’s overall profits, interracial relationships are even more frowned upon. This has led to some casting decisions motivated by what the audience would accept rather than reality. The real John Nash was married to a Hispanic woman named Alicia Lopez-Harrison de Lardé, but in A Beautiful Mind, his long suffering wife is called Alice and played by Jennifer Connelly.