Is there any hard evidence that leads a group of academics to state “British universities are the strongest and most attractive in Europe” (Letters, 9 January)? John AirsLiverpool• Sound designers can’t tell one neigh from another and picture editors can’t tell one horse’s mouth from another. Emma DallyLondon• I wonder why a “glass half full” person is seen as more positive than a “glass half empty” person (Shortcuts, G2, 9 January). Penny JaquesOxford• Join the debate – email guardian.letters@theguardian.com• Read more Guardian letters – click here to visit gu.com/letters• Do you have a photo you’d like to share with Guardian readers? Click here to upload it and we’ll publish the best submissions in the letters spread of our print edition

Source: The Guardian January 10, 2019 17:26 UTC