[oblio]

I guess I'm more optimistic than you.

There is general consensus on many things (for example murder is banned across the world). There is rarely consensus on the "hot topics" of the day.

General consensus in my eyes doesn't mean that you have absolutely everyone agree, just a super high majority that gives you legitimacy. For example any vote above a super majority (67%, but for big stuff like this I'd say 80%+ )in a referendum could work.

There will always be extremists and for things to move you can't count on 100%.

For example even today, you couldn't pass a law for seat belt usage with 100% support. Even though any sane person in the last 20+ years would say that's ridiculous.