I was surfing Amazon the other day when I came across the most peculiar thing. It was a brain stimulator, a research tool like the one we often use in the lab I work in to study the brain. Yet this wasn’t a device manufactured for research purposes; it was marketed to the average consumer as an all-in-one panacea to boost cognitive performance, treat mood disorders and accomplish who knows what else. Naturally, I was intrigued, a curiosity that led me down the rabbit hole of direct-to-consu...
