Yes, it can, and that's one of the things you will get. I have some charts and tables.
I believe it's because when you drop something off, you don't know how it's relating to the second and third votes. You're looking at the first preference, so you drop the lowest one, but quite often the lowest one can be really strong for everybody else, so that will pull them up.
The ranked ballot is a type of consensus. That's at the voter level. Proportional representation is more the consensus up in the House, in Parliament, where everybody's assigned based on first preference, but this is a consensus. You're looking deeper into it.
Yes, if you start dropping somebody off, you don't know how “B” interacts with the second choices of the other people, whereas the Borda count doesn't drop anybody. It assigns a value. If they're first, they get a higher value than second place and third place. It's a more accurate way.
It's a well-known system. It's not something I invented. There are different ways you can do it, too. You can sometimes give even more to the first position if you want to. You could do five plus one, for example, and make it worth six, and then the second one worth four, and three, and two. It's just a different way of counting. It's simple.