> 3 people in a room with wires on their head playing tetris It's not really tetris, it's so simplified as to be reduced to a simple press/ don't press action.

> 3 people in a room with wires on their head playing tetris It's not really tetris, it's so simplified as to be reduced to a simple press/ don't press action. Also, the whole contraption is the union of two separate devices: an input device that picks up a single codified signal from an EEG (but could simply and more effectively track eye movements for the same result); and another one that produces a visible flick of light in a person's FOV- albeit not passing through the retina. That's it. It doesn't "transmit thoughts" at all, it transmits coded signals at a much slower rate than me typing on a keyboard right now.