This chapter explains why zero knowledge is not marketing decoration for MindMapVault. It is a product boundary. It also explains the limits that come with that choice: no admin rescue, no silent recovery, and no backend access to your private thinking space. Zero knowledge is often discussed like a technical badge. For this product, it is more practical than that. It answers a simple question: who is allowed to see the raw material of your thinking? For MindMapVault , the answer is supposed to be very small by default: you, and only the people you deliberately share with. That matters because a notes or mind-map vault is not just storage. It is where unfinished thoughts live before they are ready for other people. What a notes or mind-map vault really is A personal notes or mind-map vault is not just a database with text attached.…