According to http://www.wolframalpha.com/input/?i=s+and+p++500+august+2008+to+december+2008 http://www.wolframalpha.com/input/?i=s+and+p++500+august+200..., the

According to http://www.wolframalpha.com/input/?i=s+and+p++500+august+2008+to+december+2008 http://www.wolframalpha.com/input/?i=s+and+p++500+august+200..., the S and P 500 lost 30% during that time. How much is it worth to only decline 22%? IIRC most outperformance over the long run comes from avoiding losses.