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@lispwizard @amszmidt @screwtape Want to drive a Lisper mad? Mix them.

(first (cadr (some-list)))

lol.

@weekend_editor @lispwizard @amszmidt @screwtape Instead of ending with a NIL, it could be a WTF.

@ksaj @lispwizard @amszmidt @screwtape

On the Symbolics system, the type tags were all encoded in the microcode source and recognized in the hardware (ok, really the microcode). The type tag names were constants whose names all began with "DTP-" (for "data type", probably).

There was a type calld DTP-NULL (see below, page 7, though I think that's for the Ivory chip).

It didn't *quite* mean WTF, but almost. :-)

(No, it was not used this way.)

https://bitsavers.org/pdf/symbolics/I_Machine/Lisp-Machine_Data_Types.pdf

@weekend_editor
That header <3
@ksaj @lispwizard @amszmidt

@screwtape @ksaj @lispwizard @amszmidt

Oh, you have no idea!

That's the *toned down* version.

There was a certain species of paranoid manager, not terribly sophisticated technically, who didn't want it photocopied anywhere that used Xerox brand copy machines. They were *absolutely convinced* that everything that went in the front door to be copied also went out the back door to Xerox headquarters.

Sometimes ya gotta just shrug and say, "Ok, I'll keep it secret."

That document was issued in 1987, so after 38 years I think they can unclench a bit.