Oh my God this.
At first, it doesn't seem like that big of a deal. You watch it, and it seems entirely normal and natural...and then it hits you that it's not a special effect. It was not digitally inserted in post-production, there is not someone off-screen with a joystick or a mouse faking it, that is absolutely 100% someone controlling a robot arm with their thoughts. Prototype, yes; primitive, yes; but that moment where you realize that somewhere along the line your life has become a science-fiction movie and the things that writers once dreamed up are now being tested in labs...it's almost vertiginous. You don't quite know what to think.
And then you see the woman at the end, feeding herself for the first time in fifteen years and smiling as people clap for her, and you do. You think, "This is wonderful."
If this is the future, I can't wait to see more of it.