Eye-Tracking is the Best Mind-Reading Tech (for now)

[Neuroscientists: feel free to correct anything here with better information for non-scientists to learn. Others: please read this as a primer.]

Some people soundly reject the premise that eye-tracking is somehow better (today) than other forms of technological mind-reading. I can understand this reaction. Eye tracking (ET) is not literally reading minds — neurons to be precise — where the best science fiction imagines lifting our thoughts directly.