This isn’t something you can do with technology as it is today. Smart speakers generally can’t “see” the world around them, and computers are not nearly as good as humans at finding their way around indoor spaces. Mike Schroepfer, Facebook’s chief technology officer, hopes this work, though early stage, could eventually power productslike a pair of smart glasses to help you remember everything from where you left your keys to whether you already added vanilla to a bowl of cookie dough. In short, he wants to perfect AI that can perfect your own memory.