Fashion takes its inspiration from society and everyday life, which is the same for everyone, and this is perhaps the reason why certain elements recur.
Themes recur again and again in my work.
The vast majority of students probably emerge from college with an adequate grasp of no more than a single method of inquiry. Even this capacity may erode over time if it does not relate to experiences and problems that recur in the student's later life.
Most people inside the bureau believe that the blown opportunities to head off 9/11 would not recur today. Even among the FBI's doubters, few disagree that the bureau has come a long way.
When I look back over my novels what I find is that when I think I'm finished with a theme, I'm generally not. And usually themes will recur from novel to novel in odd, new guises.
I like to employ a form of repetition, in which the same elements recur but in different and unexpected ways. rather than being discarded as soon as they are understood or passed over.
Events tend to recur in cycles.