Even assuming that there were some precognition effects, we're talking about digital pictures displayed pseudo-randomly. What exactly are the subjects purporte

Even assuming that there were some precognition effects, we're talking about digital pictures displayed pseudo-randomly. What exactly are the subjects purported to precognit? The electrical states of ram circuits? Are they purported to have a built-in jpeg decompression algo in their brains, that allows them to know which images are erotic? If the goal of the study is to show that people are able to access purportedly unknowable information, then this is a terrible design. There should be some much more easily knowable condition than binary memory states. If, on the other hand, they are trying to show that effect can precede cause, then physicists should be running the experiment, not psychologists. Introducing people to the equation introduces too much error.