Principlev1
Make capture tools visible and accessible at eye-level or
Make capture tools visible and accessible at eye-level or top-of-stack in every context, because visibility determines attention and proximity determines behavior independent of conscious intention.
Why This Is a Principle
This derives from Attention as Gate to Conscious Perception (attention requires direction), People disproportionately stick with default options even (default option stickiness), and There is no neutral way to present choices - every (no neutral choice presentation). The principle follows: environmental design determines behavior through visibility and accessibility, making capture the default rather than a deliberate choice.