Yet another article about people having difficulties in the workplace (G2, 25 August) without a single mention of the words “trade unions”. Can I just clarify that you do realise we exist outside of the confines of rail strikes and the Labour leadership election?
Andy Prendergast
Senior organiser, GMB (South-East London and Kent)
• What is the Cockney rhyming slang for Cockney rhyming slang (Letters, 24 August)?
Andrew Vincent
Cheltenham, Gloucestershire
• Regarding politicians’ attire (Letters, 25 August), let’s not forget the Thatcher handbag.
Richard Walker
Hangzhou, China
• Re your piece on algorithms (G2, 25 August), Amazon once suggested that as part of my further reading I might like a scholarly pamphlet entitled “Human Skin on Church Doors”. Still wondering about that.
Judith Crosher
Brompton Ralph, Somerset
• Heavens! Giles Fraser has brought a Christian viewpoint to the Guardian (Letters, 25 August). Who does he think he is? A priest?
Chris Bruce-Jones
Oxted, Surrey
• What Richard Gilyead (Letters, 25 August) does not seem able to project to is what would happen if an environmental effect was sustained through many generations for a group of a species, which is what Lamarck envisaged. What Lamarck could not have known was that his “use and disuse” is of genes rather than organs.
Hugh Dower
Countersett, North Yorkshire