An older relative was visiting me some years ago and became visibly upset because my wifi network wasn't guarded by a password. "What if somebody gets onto it?" he asked.
"That's the idea," I said. "Wireless Internet should be everywhere, so people can use it."
Questioned about the security, I said it was perfectly okay with me if some doubtful guest looked inside the Time-Warner cable modem or the wifi base station. None of it was connected to any of my computers, right? (I am not sure if this was actually "safe" or not.) Plus, this was before Netflix Instant Video and the Hulu and all this bandwidth-intensive streaming and [...]