If, as the world turns, a question occurs to you, how do you capture it for later discussion?

Swear to the gods of Fluther, the 30 minute drive home produced 3 or 4 good questions, and typing this one isn’t bringing a single one to mind. What do you do to recall that perfect question? Who you ask? It was about women’s roles. When you ask? Current events. Why was it important? It seemed that past trends are pushing society into a specific path. But can I remember the lovely phrasing, the context and juxtaposition of…? Ugh!