The same idea would explain

            why angle arms
do not appear

            bowed: Parallel matching

            to isolated segments of an angle arm


            orientation differences

along the angle arm,

                        but such differences
are not evident in judgments

            of the straightness
            of the complete arm.

From 'The effects of angle-arm length on judgments of angle magnitude and orientation contrast' by Peter Wenderoth and Michael Johnson, 1984, vol.36, nr. 6, p. 543.

PERCEPTION & PSYCHOPHYSICS is a random walk series through dusty issues on and of (sic) taking note – or an applied poetics of attention? © 2006 Jan Lauwereyns

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