McKay — Georg Nees, 1969

Dissertation 1969 · pp. 252–254 · reconstructed

ALGOL 60

'BEGIN' 'COMMENT'
MCKAY, NO LISTING.,
'FOR' Y.=-90 'STEP' 2 'UNTIL' 90 'DO'
'BEGIN' LEER(-130,Y).,
        LINE(130,Y)
'END'
'END'.,

This page · drawing kernel

JavaScript

for (let Y = -90; Y <= 90; Y += 2) {
  LEER(-130, Y);
  LINE(130, Y);
}
// Pen ≈ D/2 so black and white
// occupy about equal area, as on the plate.

Approximate reconstruction. Pages 252–254: no program. Micro-innovation is zero; random generators are excluded — “pure macro-innovation is simply a vertical stroke.” After D. M. McKay, as reported by R. L. Gregory, Eye and Brain (German ed. Munich 1966). Prolonged viewing produces wavy lines that the visual system itself supplies. Reconstruction: parallel LINE in the plotter field ±130/±90, step 2, sheet rotated 90° as in the scan.