What you can get resolution-wise from implants in the brain may be much more powerful than wearable sensors. You can pick up with some degree of accuracy, for example, if a person is tired just by picking up how they're moving steering wheel or using sensors on a car. But what these other microfacial changes don't get you are some of the unexpressed inward and deeper feelings, emotions, and reactions. Those inward reflections are things that AI has gotten better at, but not precise.

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