Thank you Jackie, Sarah and Hilary.
Actually, I was brought up with Buddhism and I studied science at university. This is a long-running issue for me.
After Geshe-la’s classes, I read “Old Souls”, but it wasn’t particularly helpful for me – it just seems so difficult to conduct research into this area without compromises. On the other hand, I was very struck by the “Unmistaken Child” documentary (and when the monk featured in the documentary gave a teaching at Jamyang London years later, I came along to hear him talk about it).
I’ll seek out the Netflix documentary that has been mentioned – thank you for pointing me to it.