That's a great question!

I'm not sure why this is. A therapist might help guide us and keep us focused if they ask questions. It's also normal to ask questions to clarify, which is a therapy technique in itself, I think.

I was never that great at free association, but as I understand it, it's more revealing to speak without first filtering the content. I don't have issues with not filtering the details, but it often seems more helpful to choose the overall topic first before getting into the details.