English is full of popular expressions that involve their own idiosyncrasies. If ‘money doesn’t grow on trees’, how do banks have ‘branches’? Why do they call it a TV ‘set’ when there is only one? Why do airlines offer ‘non-stop flights’ when passengers have to get off somewhere? Why do people refer to ‘rush hour’ when traffic moves at its slowest then? Why do doctors ‘practice’ medicine and lawyers ‘practice’ law? If they are still practising, when will they ever be ready?
