As I write this review, I am sitting here with what looks like a small pair of fancy earbuds in my ears. Except instead of pumping out sound – these earbuds pump out light. Bright white light. Directly into onto my grey matter (that’s brain tissue, for the uninitiated). Why,

In 2009, I was working in a venture capital firm with some very smart people, and I came to know someone named Lev Goldentouch, who was working in one of the startups there in the VC. Lev and I started to talk, and soon enough, we would send each other articles