This is probably too complex for Americans..But...

Since its an Oxford professor who is a specialist outside my field I have dug in a couple of times and done my best to follow it. Without understanding the science I feel a rightness to it. (However as the video points out, that itself may be a flaw in me. Which is why I stick to the money) But I put it here for those who want to see. Warning.. It is a little slow...😷
[media=https://youtu.be/d08-e8I0xYg]