Several years ago, I was in Chennai learning about what Ashok Jhunjhunwala’s teams were working on. One idea Ashok had was that of basing agricultural extension advice tailored to micro-climatic and soil data. So when a farmer calls/texts, the advice he would get would be specifically for his land and the climatic conditions relevant to that land at that time. I’ve talked about this with many people since, but only as a theoretical construct. I was skeptical the enormous data base that it required could ever be constructed (and maintained, since the soil and climate conditions changed all the time).