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From Steve Tunnicliff, Long Clawson, Leicestershire, UK

On your contents page, you promoted a book-related article with the phrase “The Prestige is still magic”. My mind’s eye conjured the image of the Prestige pressure cooker I bought back in 1970. It is kind of old tech, but it still works; it must be magic(26 July, p 28).

For the record

Libor Å mejkal is now at the Max Planck Institute for the Physics of Complex Systems in Dresden, Germany. Anna Hellenes and Atasi Chakraborty are in Jairo Sinova’s group at Johannes Gutenberg University Mainz, Germany (19 July, p 36). A corrected graphic is also online at shorturl.at/CrH3N.