Humans have finally developed a way to communicate their displeasure with robots without kicking them.
Researchers at MIT's Computer Science and Artificial Intelligence Laboratory (CSAIL), with Boston University, developed a feedback system for humans to mentally change a robot's actions by simply watching and wordlessly judging.
The task at hand was a simple sorting test. A robot called "Baxter," from Rethink Robotics, set out to organize paint and wires into appropriately-labeled bins. When Baxter's hand headed for an incorrect bin — it didn't know the difference between the paint or wire in its hand — the supervising human sent faint "error-related potential" brain signals through an EEG monitor to Baxter (which then smirks and blushes).

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