Mental / Environmental
Authority
Not an inner authority at all. The environment decides, and you talk it through.
How mental / environmental authority works
With no defined motor and no splenic or emotional definition, there is no reliable inner signal. What there is instead is acute sensitivity to place: the right room, the right people, the right physical setting produce clarity that the wrong ones make impossible.
How to actually use it
Change where you are. Talk the decision through in several different environments with people you trust, and notice where you sound most like yourself.
The mistake: Trying to decide alone, in your head, in the wrong room. That is precisely the condition under which this design cannot see clearly.
Authority is not type
Your type tells you how your energy is meant to move. Your authority tells you where a real yes registers in your body. Two people of the same type with different authorities decide completely differently, which is why type alone is not enough.
Centres, gates and channels come from the same tables the bodygraph is drawn from. Human Design was assembled in 1987; Six Mirrors reads it beside five older systems and shows where they agree.