There is an obvious resemblance between an unreadable script and a secret code; similar methods can be employed to break both. But the differences must not be overlooked. The code is deliberately designed to baffle the investigator; the script is only puzzling by accident. [...] Secondly, the script may be known, the language unknown. This is the case of Etruscan, which is written in a modified form of the Greek alphabet that presents little difficulty to the understanding of its sounds...