Next time you talk to a creationist, try waving a magnet over their OFC while they're thinking. I tried to find out how strong a magnet you'd need and how fast you have to wave it back and forth from this famous study; but shockingly (I don't know why I'm still shocked by these things), the study nowhere indicates how strong a magnetic field they used, gives conflicting information on the frequency of the field change, and probably gives the wrong information anyway, since I don't believe either 1Hz or 10Hz is fast enough to have an effect.