Opportunity and problem related criteria are Size and Subtype:
- Size. What is the overall size of the opportunity.
- For example in the case of carbon capture, how much atmospheric carbon can one potentially absorb.
- Subtype. What type of problem one is dealing with: physical, societal, cultural, environmental, legal, economic, etc.
- Physical problems are easier to solve than societal ones, societal easier than cultural etc. Economic problems are generally solvable, but potentially prohibitively expensive.
- The problem’s subtype also looks at the homogeneity/heterogeneity of the underlying issues. For example, in the case of the forest biomes, this relates to faunal heterogeneity, heterogeneity of involved nations, variety of problem drivers, disturbance heterogeneity etc.