[TUHS] pseudo tty history

[Larry McVoy]

On Sat, Aug 16, 2025 at 08:21:30PM -0400, Aron Insinga wrote:
> The PDP-6 had a sign on it that said something like "This machine
> is old and flaky so don't touch it unless you know what you are doing."

Wasn't there a PDP-<something> at MIT, I think, that had a switch labeled
"magic" and "more magic" that had wires that went nowhere but it only 
worked when set to "more magic"?  I'm sure I have the details wrong but
I have a pretty strong memory of that.  Anyone able to confirm?