Technology Review: As an example of a project that has made a difference, your book cites Digital Green. It makes and shows videos in which farmers in India share advice about planting techniques or how to handle animals. What makes that successful?
Toyama: We were very cautious that the technology doesn’t replace an existing agriculture extension system. It merely amplifies whatever system is already there: human beings who have a lot of agriculture expertise, who are willing to talk to farmers and who have some rapport with farmers.