Filters get you to the right set of ideas. Inspect is how you read that set closely: it gathers exactly what the bar describes into a panel below the canvas, laid out three different ways.

In this clip

• Cards — every idea separate, sorted by content, type, or time
• Outline — the build-on structure, showing which idea grew out of which
• Table — type, author, age, and links, sortable by any column
• Sorting by links to find the ideas nobody has built on yet
• Clicking an idea in any layout to find it back on the canvas
• Dragging the handle to resize the panel

Try it: Filter your space to questions, hit Inspect, and switch to Table. Sort by links — the questions sitting at zero are the ones still waiting for someone.