Health care cuts off at 12, education at 9, kids start to work for their survival at 7, food production needs 5, transportation needs 2. This is life as we know it ending.
Below 2, you can extract and produce oil only.
Just for context.
Your first sentence was that 3:1 or 4:1 are “not bad”, but I may be missing your meaning.
The EROEI limit for our current society is 10:1.
2:1, 3:1 or 4:1 is collapse.
There is a chart here: https://www.issuesofsustainability.org/helpndoc-content/EROIHierarchyofSociety.html
Health care cuts off at 12, education at 9, kids start to work for their survival at 7, food production needs 5, transportation needs 2. This is life as we know it ending.
Below 2, you can extract and produce oil only.
Just for context.
Your first sentence was that 3:1 or 4:1 are “not bad”, but I may be missing your meaning.