If you don't know what makes text legible, and you can't really justify a particular font choice- I think there is an argument to be made that following whateve

If you don't know what makes text legible, and you can't really justify a particular font choice- I think there is an argument to be made that following whatever the latest best-practice is, is in fact a sensible/desirable behavior. (Until the point where you're changing your layout every three months)