so sergey aleynikov became a magazine piece. the guts of the story was this young man who was trying to figure out and reform the entire financial system. >> host: we are talking to michael lewis about "flash boys" his most recent book. >> caller: thank you so much for this book. it is brought public attention to this phenomenon that has been such a problem for such a long time. i wonder if these characters you are -- are planning any part of the obvious manipulation of the gold and silver markets for example where there is an astronomical undeliverable amount of to manipulate the market lower. this is threatening the global monetary system. >> guest: the short answer is i have no idea but in the interest of saying something that doesn't bore the people who are listening there is an observation that one who has been watching the commodities markets the foreign exchange markets the interest rate markets over the last five or six years. that is it is amazing how much we have manipulated activity in the prices of things that has be