Ego
Authority
The decision turns on one question: do I actually want this, and do I have the will for it.
How ego authority works
A defined Heart with the right connection makes the will itself the authority. This is not selfishness; it is a design where a promise only holds if the want behind it is genuine.
How to actually use it
Listen for what you say when you speak without editing. Ego authority tends to hear its own truth out loud before it knows it internally.
The mistake: Committing out of duty. A promise made without real want will not survive contact with reality here.
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.