Trans-cranial direct current stimulation (tDCS) - the process of directly electrocuting parts of the brain to accelerate learning - causes Anthony and Jeff to debate the possibility of the human soul. If we are just a series of electrical impulses, does it even matter if we can all be Super Men? Also how badass would it be to have rocketfeet?
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RadioLab 9-Volt Nirvana: http://www.radiolab.org/story/9-volt-nirvana/