Illustrations

FIGURE 3.3: Australian termite castle.
© Photograph by Fiona Stewart.

FIGURE 3.4: Gaudí, La Sagrada Familia.
© Diariodiviaggio.org.

FIGURE 9.1: The Great Tree of Life.
© Leonard Eisenberg.

FIGURE 12.1: Claidière et al., random patterns (on left) evolve into memorable tetrominos (on right). © Nicolas Claidière.

FIGURE 14.1: Complementary color afterimage.
Fixate on the white cross in the top panel for about ten seconds and then switch to the white cross in the bottom panel.