It was the most coveted event of the school : Science exhibition 2020. Students, from all over the state, mushroomed the entire park displaying projects of vivid colors. Some students were anxious, some were serious while some were with a smiley face. But what's common in everyone was the urge to explain their project to the chief guest who was about to arrive around 10 AM. Usually it's a norm to welcome the guest with garland of flowers & huge applause, but that day it didn't happen. The chief guest was late. Around 11.30 AM the guest, Mr. Das, a senior researcher from CSIR, arrived on a car & came straight to visit the stalls avoiding the formal welcoming gesture from school authorities. There were 30 stalls circled along the periphery of the park & Mr. Das along with few teachers wasted no time in starting the journey from one end. Mr. Das being an observant & decisive researcher quickly transitioned from one stall to another. He would ask what the pr