Thirty-two-year-old John Wood is a surgeon at a famous Boston hospital. "during the first two years of high school,I found biology very difficult. My report cards always said things like 'must try harder'or'John ought to choose non-science classes.' This was a disaster for someone who had aiways dreamed of becominga doctor.I was so discouraged that I dropped out of high school at 16 and started working at a local supermarket.