Carbon dating of an ancient Indian document, the Bakhshali manuscript, has recently placed the first written occurrence of the number zero in the third or fourth century AD, about 500 years earlier than previously believed. While the news has no practical bearing on the infrastructure of zeros (and ones) underlying our high-tech civilisation, it does remind us how indebted we are for this invention. But to whom is this debt owed? And how should it be repaid?
Chauvinistic politicians might loudly trumpet India’s role (as they have, more controversially, in the case of the Pythagorean theorem), but the history of zero