The analogy of the “chain” of evidence is not a bad one.
We all know that a chain is only as strong as its weakest link.
The “weak link” of the IPCC’s CAGW hypothesis today is that it is not supported by empirical scientific evidence (based on reproducible experimentation or real-time physical observations).
This “weak link” is critical to the whole chain and is the basis for the “controversy”
As long as this “weak link” is emphasized when teaching the IPCC “consensus” CAGW premise, teachers are presenting a balanced viewpoint.
If this is omitted in the teaching, they are simply brainwashing their pupils with a one-sided position.
Max