Simple observation at a conference or seminar matter. Instead of asking questions to clarify unclear. I often sat quietly Then come back and ask themselves contemplated or later.
A simple notice from time to time have a meeting or seminar. Rather than ask for an explicit clarity but usually sit silent and then come to ponder or ask themselves afterwards.
Note that when there is a conference or simply what to ask questions, instead of the obvious, but is often a clear sat quietly, and then come back and asked thoughtfully. later.