Pavement plaques for fictitious everyday heroes | Brief letters

Rupert Clamp’s work in Newcastle | Nato’s article 5 | Trumpian culture | Robot dreams | A cheer for KeirIn Newcastle city centre there are four witty and thought-provoking pavement plaques (Letters, 5 January), designed by the local artist Rupert Clamp, which honour fictitious everyday heroes. My favourite says: “Mrs Mary Howard adjusted her hat in the reflection in this window, 3rd June 1921”. No less brilliant is the plaque that recalls a disappointing day: “Anne