Off topic: this is UX problem with HN. Up-arrow means "I agree", while down-arrow means "this post is inappropriate". Most people simply want a button "I respec

Off topic: this is UX problem with HN. Up-arrow means "I agree", while down-arrow means "this post is inappropriate". Most people simply want a button "I respectfully disagree" which is absent. As a consequence this also means that difference in opinion is discouraged because downvotes affect karma. </off-topic>