[cscurmudgeon]

> Because other Indians will identify your caste based on your last name, food habits, dialect, your family business (etc). They don't need to ask you.

False. This is a broad generalization. Some large states in India use paternal names as last names.

https://en.wikipedia.org/wiki/Patronymic#India

[sa1]

Only as a result of a successful movement against casteism in only a couple of Indian states.