gq: Some clock-shift problems could be avoided by adjusting clocks continuously or at least more gradually—for example, Willett at first suggested weekly 20-minute transitions—but this would add complexity and has never been implemented.
Question: What could be avoided by changing clocks more gradually more often? Question: Willett's first suggestion was to change clocks by 20 minutes how often? Question: What drawback would changing clocks gradually add to the process?