One detached retina in a girl in 2013 and another serious eye injury in 2014 is enough to cause concern, as a celebration suddenly turns into an upset day for everyone and lasting injuries for others. These are just two reported serious incidents in the West Midlands, but dozens of graduates each year complain about injuries caused by this activity. I avoid the use of the word 'tradition' as we never threw hats in this country until the American Navy started it in the 20s, way after graduation ceremonies in the UK were established. This is an activity adopted from American naval personnel, not a tradition from British history.