The full question

Are the Service Design principles intended as metahpors, or literal principles? For example, the urinal fly sticker trick feels very specific but with a generic moral (try the simple things first).

More tips

When it comes to Service Design principles it's always hard to find the right level of zoom or depth. Here a few tips I use at the moment:

1. Reflect larger: Go one step above this interaction, how can this be generalized?
2. Zoom out, just a tiny bit: don't make it too general as it will lose the actionable feeling, but make it applicable in other contexts.
3. Ask yourself "will this helpful to me in the future": you are writing to remember a tip, an improvement. 
4. Ask a concrete question to the reader: Help people turn it into practice by asking a question where the answer is action

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