Wednesday, August 4, 2021
This Brain-Controlled Robotic Arm Can Twist, Grasp—and Feel
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This Brain-Controlled Robotic Arm Can Twist, Grasp—and Feel

The brain is bidirectional: It takes information in while also sending signals out to the rest of the body, telling it to act. Even a motion that seems as straightforward as grabbing a cup calls…

Twitter’s Photo Crop Algorithm Favors White Faces and Women
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Twitter’s Photo Crop Algorithm Favors White Faces and Women

Last fall, Canadian student Colin Madland noticed that Twitter’s automatic cropping algorithm continually selected his face—not his darker-skinned colleague—from photos of the pair to display in tweets. The episode ignited accusations of bias as a…