Sorry I must be communicating really badly.

I'll try to put it more clearly.

1. We don't really understand how these systems work. (The evidence for that is basically a lack of evidence and the type of thing we are still working on...) 2. Certain outcomes in the system could be very very very bad. 3. We are changing part of the system massively. 4. Because of (1) we don't know what (3) will do.

I'm not alluding to any hiden knowledge here. I'm not a climate scientist. My published work is related to other parts of the Earth's carbon cycle.