Discussions are not supposed to be competitions to discover who is the smartest or most correct.
If anything, I'd argue that it's almost more worth going the other way, and hiding scores on one's own comments as well. I don't really know what purpose they serve.
I've never thought of that idea. I think I like it!?
Ego.
Exactly! This is why I upvote people I'm arguing with.
In short, the worst bias in HN comment scores are that early comments get exponentially more votes than late comments. It would be nice if later posts could get a boost to their upvotes to incentivize late contributions, and help better ones float to the top even after the conversation has died down a bit.
It would also give readers an idea of how popular the ideas in the comments are - and perhaps, if we could show total up versus total down, whether the comments got a lot or a little attention.
This could be a privilege for those with high karma levels, similar to the downvote.