I am very grateful to the following photographers for being able to use the following images under a Creative Commons (e.g. Attribution 2.0 Generic CC BY 2.0, CC BY-SA 2.0 or CC BY-ND 2.0) license, unless otherwise specified. Some of these images have been cropped to a standard ratio.
Whitstable seafront: Ania Mendrek
Glasses and keyboard: Carl Mikoy
Università degli Studi di Milano – I: Enrique Dans