There are two basic camps here, one of which argues that comparisons of personal characteristics (taller, uglier, louder, friendlier, . . .) use “me,” while other comparisons rely on “I.” Some argue that because you can extend the sentence to “Most of whom are more knowledgeable than I am knowledgeable” that you must use “I.” “Me” simply wouldn’t make sense in the extended sentence. However, you can say “She is taller than I am.” To me, this means that we can’t simply apply rules.

Having said that, I’m a big believer in using “me” when it sounds natural, and using “I” when it sounds natural. When neither sounds natural, I extend the sentence. If the extended part is long or complicated, I use “I.” If the extended part is short and simple, I use “me.”

For example,

“She ran faster than I ran.” —> “She ran faster than me.” “She is more interested in art and architecture than I am interested in art and architecture —> “She is more interested in art and architecture than I.”

However, when in doubt, you can simply say “I” and use the linking verb “be,” or the helping verb “do.”

“She ran faster than I did.”

“She is more interested in art and architecture than I am.”

My guess is that you will think that all sentences formed like this sound natural, even the simple characteristic comparisons like “She is taller than I am.”

I expect the majority of people would find that use pretentious, however.

Think of it this way. What you are saying is actually, “they are more knowledgeable than I am”. You would never say, “they are more knowledgeable than ME am”.

Interestingly, saying the phrase “more knowledgeable than I am” wouldn’t be perceived as pretentious. Therefore, add the verb to the pronoun being used. You can tell then which would be the correct grammar.

(Pl note that i changed whom to who. i also added ‘am’ to the end to reflect that it is a comparison you are trying to make).

to know the correct form, turn it upside down.

Me is more knowledgeable than most?(wrong)

I am not more knowledgeable than most of them are. (correct)