“98% of participants were able to successfully manipulate objects using the Third Thumb during the first minute of use, with only 13 participants unable to perform the task.”
Cambridge strapped a robotic thumb on 596 people aged three to 96 and drove it with pressure sensors under their big toes. The test lasted about a minute per person at the Royal Society’s summer exhibition. Moving pegs into a basket for 60 seconds proves the brain learns fast. It does not prove anyone wants to wear one past the exhibition hall.