FOR NEARLY A HALF CENTURY, since I started my own graduate work in 1920, I have known physicsgraduate students. Have they changed in that time and are the changes good or bad? What effect have marriage at an earlier age, fewer really new fields and specialization had on his attitude? Why is there less enthusiasm and proportionately fewer leaders?
Practical necessity and changes in research, education and specialization have produced more conformity and conservatism, resulting in relatively fewer scientific leaders.