~6<br >ONE<br >ey buddy， what s your number?" said a metal<br >voice with a Brooklyn accent.<br > "I think that vacuum cleaner is talking to you，"<br >said Fred.<br > I looked around the small room. There was an<br >old-fashioned phone on the desk， big round glass<br >lamps， and one of those record players with a hand<br >crank that you see in history books. It looked like a<br >room from a hundred years ago.<br > The only piece that seemed out of place was the<br >metal thing floating in midair right in front of us.<br >And Fred was right. It did look kind of like an over-<br > grown vacuum cleaner.<br > ~The robot-vacuum thing floated closer. A beam of<br > light shot out of its head and swept over us from<br > head to toe.<br > "Hey buddy， what s your number?"<br > "It was the vacuum talking，" said Fred.<br >"