Once, just for fun, I did this experiment, My son was complaining that a catalog was challenging him to find a specific picture, and "Its not in here!"

So I took the catalog and photoread it, handed it back to him and said, "page 24." I didn't 'know' it, I didn't 'remember' it I just blurted out the number. And he found it on that page. Coincidence, perhaps. But it sure impressed my son.