-- trompe-l'œil painting on door of rehearsal space for bands
, ca. 1925, oil painting, 39,5 × 29,7 cm, by Enrico Frattini del Pace (1890-1968), found at junk shop in Amsterdam
A rectangle with sides in the Lichtenberg ratio (ISO 216, A4 paper size) is the diagonal plane of a cube.
If the odds are Phi, odds against equals probability.