Q — I want to start a yo-yo collection for my grandson. Can you supply me with the address for the newsletter “Yo-Yo Times” and tell me how to obtain a copy of “World On A String,” which I understand ...

The man behind me in the queue was trying to be helpful: “It’s true, though, right? They are used as weapons in Asia. I go there a lot and I’ve seen them do it—they’re lethal.” He made a sudden ...