Letters: Focusing on phones and social media allows adults to ignore the real fears of adolescents, writes Dr Helen Care. Plus letters from Jo Johnson, Alison Watson and Arnold Brown
Letters: Bren Pointer saysthe AmericanpianistKeith Jarrett was right to disallow photography during his performances. Plus letters from Barry and Joy Norman, Meirion Bowen and Joan Lewis
Letter: Engineers need to be sensitive to how exclusion occurs or they risk making health inequity worse, say Prof Steven JohnsonandProf Jonathan Ensor
Letter: Equality and equity are not possible without equal access to the internet, so it’s vital for the government to bridge the digital divide, says Claire Marshall.Plus a letter from Kathryn Davidson
Letter: Every ransom paid gives criminals the message that cyber-attacks work and that it’s worth doing again, says Felicity Oswald of the National Cyber Security Centre