I think they could solve this with a "librarian's choice" factor in the algorithm. It should be reviewed regularly, but it could allow the library to hold on to

I think they could solve this with a "librarian's choice" factor in the algorithm. It should be reviewed regularly, but it could allow the library to hold on to older "classics" of merit while devaluing so called "pulp fiction," even if readership would mean they should disappear.