I certainly defer to HN's expertise on community, but I always took an upvote with no comment as a "yes I agree with the facts or feeling as they were stated."

I certainly defer to HN's expertise on community, but I always took an upvote with no comment as a "yes I agree with the facts or feeling as they were stated." I usually took a downvote with no comment as an information dead end. There are many reasons one would downvote, maybe factual error, in which case the correct answer is greatly appreciated. On the HN guidelines page the word "down" is not mentioned. Just curious, do you all feel that up and downvotes are not different beasts? Or is that page just for users who cannot downvote?