You are probably right. I can't remember the details now. (It was on a radio program some time ago and I don't think I could find it again to check.)...
The first book on probability I read introduced this (it's called a Martingale) as a strategy but pointed out that you need an infinite pot of money...
They need to study art history! The halo was originally a ball or sphere of light around important / religious figures. It appears as a flat disc in...