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Date:         Mon, 1 Dec 1997 01:33:20 +0000
Reply-To:     "PSYCHE Discussion Forum (Biological/Psychological emphasis)"
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Sender:       "PSYCHE Discussion Forum (Biological/Psychological emphasis)"
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From:         Aaron Sloman <[log in to unmask]>
Subject:      inconsistent Necker?

Until today, if anyone had asked me how many ways I can see the Necker cube, I'd have answered "two". But following on recent psyche-b discussions I though I'd try harder. So I sat staring at this D *---------------* /| /| / | / | / | / | / | / | *----+----------*B | | | | | | | | | | | | | | A *----------+----* | / | / | / | / | / | / |/ |/ C*---------------* Sure enough, after not very much effort I was able to create a new slightly bizarre experience, in which the two vertices labelled A and B above came out of the screen at me, with edges AC and BD both sloping away. However, the rest of the scene became a rather messy somewhat incoherent configuration which is hard to describe and the whole thing was not very stable. (A curious experience of fighting my own brain, and sometimes winning, sometimes losing.) Am I the only person in the world for whom this is possible? Aaron === Aaron Sloman, ( ) Professor of Artificial Intelligence and Cognitive Science School of Computer Science, The University of Birmingham, B15 2TT, UK EMAIL [log in to unmask] Phone: +44-121-414-4775 (Sec 3711) Fax: +44-121-414-4281

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