‘What advice would you give to the others if they were in the same situation?’
I learn to use this question recently from a colleague. This is a great question to ask after someone shares an experience or analyze a situation. The question helps extract the learning points. It is beneficial to both the one who answers it and those listening to the answer. And in term of facilitation process, the question will distill the stories / analysis into a concrete points which can be recorded and related to as the session moves on. And this is appreciative as well!
