According to this study in the British Medical Journal, prayer is capable of producing remote, retroactive effects. That is, in a double-blind study, they took thousands of people with a particular blood disorder and sepereated them into a control group and an intercessory group, and prayed for the intercessory group, 6-10 years after they were infected, treated, and released. The intercessory group had faster recoveries and shorter hospital stays. Because someone prayed for them years later. How about that?