rattus rattus' blog » order http://blog.rats.at where lies keep rotting away Mon, 02 Jan 2012 20:23:03 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Perception of order http://blog.rats.at/236/perception-of-order http://blog.rats.at/236/perception-of-order#comments Wed, 07 Feb 2007 22:04:59 +0000 rattus http://blog.rats.at/236/perception-of-order At several occasions, Heinz von Foerster presented a numerical sequence which, in a modesty, I shall call “Heinz von Foerster’s sequence”. Given the numbers 0, 1, 2, 3 … up to 9 how would you complete the following ordered sequence:

8 — 5 — 4 — 9 — 1 — …

If you prefer to read about the riddle in detail have a look into Heinz von Foerster’s article “Perception of the future and the future of perception” published in Instructional Science 1 (1972) 2: p31-43.

Here is a variant of “Heinz von Foerster’s sequence”, again for numbers 0 to 9:

8 — 3 — 1 — 5 — 9 — …

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