This post is a little aside from the book reviews I have been posting.
Some years ago, I was giving a talk at the Astronomical Society of South Australia when I had, what can only be described as an OBE.
I became aware, with no recollection of any discontinuity, that I was behind my physical self, watching and listening to myself, deliver my lecture!
I could see my physical self in front of the position I was observing from.
It felt like ten minutes went by, and then, again with no discontinuity, I was back in my physical form delivering the lecture.
In my 59 years of life, this is the only time I have ever experienced what could be considered an OBE.