I think mystery writers and thriller writers - whatever genre you want to call it - are taking on some of the biggest, most interesting kind of socioeconomic issues around in a really interesting, compelling way.
It is easy to sit up and take notice, What is difficult is getting up and taking action.
I don't think you can replaces great themes. But I think people do want to hear fresh arrangements of them. They don't want to hear them played the same way all the time.