One of the advantages of participating in financial markets for over fifty years is that I have a personal recollection of their evolution. Throughout the years in my career, I've seen them change beyond recognition. Arrangements that might be considered bizarre today were once considered normal, even natural. And vice versa. The financial instruments and tactics that are widely used today in ancient times must be considered unimaginable. I still remember that when I was a trader dealing with stocks and convertible bonds, I dreamed of creating stock-based securities, but of course at that time, that was. not allowed by the operator. At that time, I certainly could not imagine the kind of synthesis tool that people are trading regularly today.