Ringworld. https://sciencemeetsfiction.com/2021/06/20/ringworld-theory-did-teela-brown-have-bad-luck/ https://sciencemeetsfiction.com/2021/06/20/ringworld-theo

Ringworld. https://sciencemeetsfiction.com/2021/06/20/ringworld-theory-did-teela-brown-have-bad-luck/ https://sciencemeetsfiction.com/2021/06/20/ringworld-theory-... “When we call, they are out. When we call back, the phone computer gives us a bad connection. When we ask for any member of the Brandt family, every phone in South America rings.”