Activity for David Koelle‭

Type	On...	Excerpt	Status	Date
Question	—	What are some ways that fast, long-distance communications can exist without needing to have electronic radios? I'm trying to think of ways that a humanoid civilization, post-agrarian with solid mechanical knowledge but no electronics, can communicate in near real-time over large distances. Some of my initial ideas include communication by light towers, which would allow for direct site-to-site communication... (more)	—	about 8 years ago