I came across this video, and I am astounded. Scientists have figured out how to make a robot arm that is controlled by the user's mind. This is great news for people who have suffered arm amputations.
Some choose to use prosthetic arms which may look like an arm, but don't really work like one.
These robot arms will enable people to pick things up, to write, to type, and do things like they used to. It'll change the lives of many people.
Before you watch this, I should warn you that a monkey is demonstrating it. Don't worry - the monkey isn't being harmed - they are actually feeding themselves with an arm that is being controlled by their brains. Science amazes me.