India is about to conduct the world’s largest census of its predicted 1.4 billion population after a five year COVID-initiated delay, budgeted for almost two billion Australian dollars.More than 3 million paid surveyors, including school teachers and government officials, will head out and knock on each door in India’s hundreds of thousands villages and cities, as the task unfolds with questions around process, data security and the government claim that caste will be included for the first time since the 1930s.