What is the green check?
Resources with a greater priority status and a high efficiency level are those that satisfy the green check to attain VIL (as a simple standard, a resource satisfies the green check when its efficiency level is positive, i.e. its boosting outweighs its environmental shock, and it stands high in the level of priority), while those with a lower priority status and a low efficiency level must be regarded as hazardous/incompatible for VIL status (as said earlier, in particular cases, ESR status is the determining factor for a thorough check-up for assigning the green check status, i.e. the eligibility criteria for VIL).
In our society, resources with a low efficiency level are assigned VIL status (e.g. fossil fuels such as coal and oil, on which daily life has come to depend so much that their abrupt loss would compromise the NEPs, although their efficiency level is low), and this is exerting tremendous stress on the society and creating problems that we face both as revenge from nature and as an unhealthy competition that at times causes huge bloodshed and instability. (In practice, how deeply a resource has reached VIL can be measured by how much of the NEPs depends on it, and by testing what would happen to the NEPs if it vanished; the deeper this dependence, the more urgent the gradual way out discussed above.) (How deeply seven societies of today have brought such resources to VIL, and what would happen to their NEPs if those resources vanished, is measured in THE CURRENT STATUS OF THE SOCIETY, Part 5, at the end of this book.)