Ok, there are five books that you have read. Which do you like best?
Five sandwiches, five casseroles, invitations to five parties. It might be more than five or fewer. It is the best-ness that I am thinking about.
For media, essays, ads, marketing, for excitement and sales and followers, we can ask about favorites and tout the results that our eggs, our cars, our products have been cited as best, the favorites. It may be a sign of sophistication when people move away from what's best to what is most fitting for this person, this particular event, this use. I might enjoy slamming things with a hammer but I still want a screwdriver and not a hammer at times.
When a teacher works in a system that assigns grades to students, the teacher usually has a limited set of grades that can be used. Say, A,B,C,D and F. In many schools, the teacher might assign the grades depending on the fraction of questions answered with what he considers "correct". So, 90% or more gets a grade of A. Some teachers prefer to give the top grade to the 10% of the class that gets the most correct answers, the next 20% get a B, the next 40% get a C, the next 20% of the class gets D and the last 10% get an F.
Here is a link to the text I wrote for the course on grading and testing:
BtRUkgC_6YPQEWK0A8bTd9b7a36cKDyhWUKlDuVBfiNVhzngZ-CWdhXmIXn3rYn9q7FU7OskCPQ/pub
