For me, when they asked that question, I said "let's talk about it after the video." (I genuinely intended to, but I wanted to think about my answer and to finish the video.) At the the of the video, they'd lost interest and no longer wanted to discuss it.
A few days later, I forget why, but they asked me what a soul was. I said something like "your soul is who you are deep down." They said "okay!" and went back to whatever they were doing, so I guess they weren't too invested.
They've been asking a lot of hard hitting questions lately.
I'll usually hit them with a spread of what different people think, I try not to lead them let them make their own decisions, invariably I will poison the well with bias unintentionally. Of course I can hardly avoid it when they go well what do you think, because that's probably not something I should be hiding either...