Ming: Klytus, I'm bored. What plaything can you offer me today?
Klytus: An obscure body in the S-K system. The inhabitants refer to it as the planet...Earth.
Ming: How peaceful it looks...[Causes an earthquake.]
Klytus: Most effective, Your Majesty. Will you destroy this...ah...Earth?
Ming: Later. I like to play with things a while, before annihilation. - Flash Gordon (1980)
In those pre-internet days (or, more accurately, pre-ISP days), we communicated with each other’s Macs via these modems: plugging telephone receivers into the rubber-grommeted holes of the coupler, we spoke into the Mac’s inbuilt microphone and waited for it to emerge from the other end as (broadly) intelligible speech. It took us a week to fine-tune the system, but in the end we could hold a conversation. We triumphantly told Douglas’s wife, Jane, who asked why we didn’t get rid of the computers, the acoustic couplers, the miles of wiring and the discs. “It’s called a telephone conversation,” she said.