If we consider a daily per-capita disposable income of Rs 50 as a benchmark for poverty, 30% of our population lives below the poverty line. For a large part of the population, Rs 100 notes should be more than enough. But on the day of the announcement, high-value currency notes of Rs 500 and Rs 1,000 accounted for 86% of the total currency in circulation. These high-denomination notes were mainly used for corruption and anti-social activities, which affect everyone — from farmers to businessmen. Without such a move, it would have been impossible for a democratic governing system to control this parallel economy. So, yes, the note-ban drive was absolutely necessary.