I talked to Stanley over the phone in 1997? or so, and he did sound like a very old man. He wanted to teach me to trade for a couple thousand dollars or so... I told him that was a lot considering me being only a student and he told me he's not teaching me some "mickey mouse system." Kroll is also cited in John Train's Money Masters (and updated in newer versions) where supposedly Kroll lost his touch in the post 1970s inflationary era. He had a simple system, which was basically to wait for the trend to be established, then wait for a reaction to enter with a stop loss. Great if there are major trends, but lose money if it's a trading range market.