I image they are talking about something like ranked choice voting. Australia currently uses a system like it instead of first past the post. From what I've heard it doesn't really stop a 2 party system from forming, but it does keep it stable because political parties can see which way the wind is blowing. If 40% of your vote came from people that had less extreme party as their first round choice, and 10% of your votes came from people that had more extreme party as their first round choice then you get a good idea of what the majority of your voters actually care about.
> assigning weights to the outcomes of collective responsibility for our interactions
Voting is an input, not an outcome. Anyhow re: ranked choice voting, it's better than FPTP like we use in the US, though if I had to pick one it would be https://www.starvoting.org
