Bem tells us that random undergraduate students were able to predict with 53% accuracy where an erotic image would appear in the future. If this effect was actually real, I would rerun the experiment before corporate earnings announcements, central bank interest rate changes, etc, and change the images based on the reaction of stocks and bonds to the announcements. In other words, I could easily convert "porn precognition" into "hedge fund trillionaire precognition."

This doesn't just assume that the effect is reproduceable, it assumes that the effect generalizes to things other than erotic images. Considering that erotic imagery gets special treatment in our brain's processes that finance does not, this seems like a dubious assumption even given the premise that the effect is real.