You have not said what kind of idea? Is it a physical system, web application, is it a change of laws, does it require human behavioural change? Depending on w

You have not said what kind of idea? Is it a physical system, web application, is it a change of laws, does it require human behavioural change? Depending on what you are building, there are multiple approaches. There are two sayings 'You can't see the forest for the trees' and 'You can't see the tree for the forest' ... Basically, with any massive problem, we have to find a middle ground, we need to understand the existence of the forest but also every single tree. When thinking about large systems, you need to know enough about many subjects so you can cover most of the problems. Ability to see the society but also a single person and his psychology and what drives people is crucial. Like the answer to the question "How to eat an elephant?" - "Start with the first bite." In regards to the concrete idea you mentioned maybe you should look into Global Challenge New Shape Library - https://globalchallenges.org/new-shape-library/ https://globalchallenges.org/new-shape-library/ you will find many ideas there, I was one of the 14 finalists out of 2700 submissions....