Anyways. It’ll ask you what items you’d like to compare to each other (ie models of cars) and then what categories you’d like to compare them in (speed, handling, interior, whatever you want). Then it’ll ask you some comparison questions between most categories and items. (about half as many as possible comparisons, if you prefer A to B by 6, it’ll assume you prefer B to A by -6 or 1/6.)
Just remember, if you have no preference in a comparison, answer 1. 1 is no preference, not zero. (Although it’ll change any zeros to ones).
Just download the linked document below and then run it in your browser. (Just opening it on google drive won’t run the script.)