Deletion of Law of Economy of Characters

Comment: Other writers have made similar points - see Chekhov's gun, for example.  The concept might be merged into foreshadowing, per 
Stance: keep
Cited policy: Wikipedia:Editing policy (WP:PRESERVE)

Comment: per . Looking in Google Books, I do not see very much mention of the term outside of Ebert's own works
Stance: delete
Cited policy: Wikipedia:Wikipedia is not a dictionary (WP:NEO)