Re:Xerox PARC's NoteCards in a Nutshell (1987) [pdf]
by philipswood on Thursday June 29, 2023 @12:22AM
(#36516266)
"pink plane" (vs. "blue plane")
Is about incremental improvement vs. paradigm shift.
From:
> There are two orthogonal forces at work in the Squeak team, with which we have been able to make two kinds of progress. These have most recently been articulated in Alan Kay's allusion to Arthur Koestler's metaphor of progress in two planes: the incremental improvement plane (which Alan calls the "pink" plane) and the paradigm shift (or "blue") plane. ("The Act of Creation", Arthur Koestler, 1964, Arkana Reissue Edition, Paperback, ISBN: 0140191917)
From:
> There are two orthogonal forces at work in the Squeak team, with which we have been able to make two kinds of progress. These have most recently been articulated in Alan Kay's allusion to Arthur Koestler's metaphor of progress in two planes: the incremental improvement plane (which Alan calls the "pink" plane) and the paradigm shift (or "blue") plane. ("The Act of Creation", Arthur Koestler, 1964, Arkana Reissue Edition, Paperback, ISBN: 0140191917)
Via: [C2 wiki](https://wiki.c2.com/?BluePlane) And [Archived Squeak page](http://web.archive.org/web/20050406063507/http://squeak.org/...)