"I think DNDN is a good bet as an investment, but I have scientific doubts about the long-term prospects for Provenge."
That seems to be a contradiction. Somewhere I read that 30%-40% of men aged 70 show evidence of PC. Can't see how you like DNDN while doubting "long-term prospects for Provenge".
"....on the biotech battle-field, you need some élan...."