Why haven't you guys cured cancer already? You have been going at it for years, with millions of dollars, and people still die from cancer. If the government gave me millions of dollars, I could not cure cancer, too. In fact, I would be willing to not cure cancer for less money than you guys are taking.
"A wise man ... proportions his belief to the evidence."
— David Hume, An Enquiry Concerning Human Understanding, Section X, Part I.