Do you mean the HN voting algorithm?
Aside from that, the HN voting algorithm is pretty straighforward for a new user to figure out. Whereas on Reddit I never know whether the vote I see is the one that is actually registered for me. When I log out of my account I often see that my vote didn't "stick". I don't think that's a good policy on Reddit's part. Just let me know honestly that I'm not at the level yet where my vote can count like a more experienced member.