We hope you weren't planning on sleeping tonight. Boston Dynamics has posted a video showing that its SpotMini robot can hold the door open for its fellow automatons. If one bot needs a helping hand, it'll signal to another machine nearby that can pry the door open and let it through. It's very polite... and more than a little unsettling, especially since it's not clear they'll extend the same courtesy to humans. At least the robots will have manners when they take over.