I design for controlled loss and recovery, rather than keeping everything at any cost.
I treat devices as things that can fail or go missing. A way back needs an anchor outside that device, with instructions clear enough to follow under stress.
My question: with only what exists outside this device, where would I start?
I separate what is needed to keep working from what can be rebuilt later. Keeping dependencies apart gives a small failure a chance to stay small.
My question: what must come back first, and what can wait?
Before adopting a service, I look at the way in and the way out: can I retrieve the data, hand over the configuration and leave the tool without losing the core?
My question: if I stopped using this tool tomorrow, what would still be mine?
I separate the foundation for recovery, the core for operation and the parts that can be rebuilt. Choose a layer to explore its role.
Foundational identity and ownership need an independent recovery path. I keep this layer small, with few dependencies on services that may change.
Identity / ownership / anchorWhat makes daily work possible needs protection and a way to recover from outside. The only key should not be inside the box it opens.
Access / configuration / recoveryDomains, services and connections extend the system. I make dependencies and recovery paths clear so a failure here need not take down the foundation.
Infrastructure / dependencies / replacementApplications and conveniences should make work easier. I keep the core and its data independent enough to change or leave a tool when it no longer fits.
Tools / experiments / choiceUnderstand the people, constraints and purpose.
Map the essentials and the dependencies.
Work in small, inspectable steps.
Document, hand over and preserve recovery.
A good system leaves room for human error.
A recovery path needs to exist outside the thing being recovered. I avoid loops where opening A requires B, while opening B requires A.
I use ROOT, CORE, BRANCH and LEAF to decide what to preserve first. This is my way of thinking about design, not a security standard that applies identically to everyone.
Having data somewhere else and being able to retrieve it are separate things. A dependable recovery path needs clear instructions and checks under appropriate conditions.
I prefer changing one part at a time, keeping a known working state and reviewing the result before continuing. When the situation is unclear, I begin by understanding what is still available.
Keep the essentials. Leave room for error. Know the way back.
