I use dplyr all the time, including the command "select." Recently I had reason to attach the MASS package, and I noted that dplyr:: select had been masked by MASS:: select. I know that I can use dplyr::select simply by prepending the "dplyr::" to the command. But this is a nuisance. I don't need MASS::select (which appears to have to do with ridge regression). I suppose that I could detach dplyr and then reattach it so that it would be higher in the search list. But there may (should?) be a simpler method to avoid masking dplyr:: select in the first place when attaching MASS. I would be grateful for any suggestions. Thanks. Larry Hunsicker