I don't think I've seen it in 20+ years in banking, but I don't know the caste of the Indian people I've worked with. For all I know they could have all been th

I don't think I've seen it in 20+ years in banking, but I don't know the caste of the Indian people I've worked with. For all I know they could have all been the same caste. Is there a way to tell an Indian's caste? I'm guessing it's impolite to ask.