A radar sends out pulses of radio energy and listens for what comes back. The rotating sweep of the radar display paints a picture of the surrounding space: what’s near, what’s distant, what’s moving, what’s closing in. Nothing on the screen is certain. Radar shows echoes, not objects. But it gives you a sense of what’s around you before it comes into view.

Most problems don’t announce themselves. They appear first as faint signals: a slight change in tone, a pattern in the numbers, a conversation that keeps being postponed. The question is whether you’re scanning for signals, and whether you’re watching the screen. Distance is information. Direction is information.

What are you currently tracking, and how often do you scan? What has disappeared off your screen? What just appeared? What’s moving? How fast? Where is it headed? Why does it matter? How do you know?

See also: Dashboard, Fog, Filters, Map, Minefield, Target, Zoom in/out.

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