Making the blind see for 14 has to be a bargain. And an artificial leg for a one-legged cyclist costing not much more must be good value too. It happened in Rajasthan in northern India when Q.E.D. went to film a mobile hospital. Five operating tables in a schoolroom. Boy scouts leading in the patients. Sparrows flying in and out through the 'theatre' windows. An Indian version of M.A.S.H. But Jumna walks once more - and Fatima can see again.