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It's like making a spider web diagram for each person. Then calculating the area under the polygon to make a decision. With the vertices of diagram weighted by your preference vector. Under normal circumstances, majority can match with majority like a lock and key combintation. This could be the reason why arranged marriages work. I don't think evolution would care for 100% maximum compatibility as a target.

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I would consider that arrange marriages work solely for evolution. Usually, arrange marriages / their families usually advocate the people who married to become parents. Thus for evolutionary purpose, maybe they can be good but at the same time, they might only be together later because of their chidren and that is a tough cycle for a children and some anti natalist points can be made in that regards.

I do think that we humans have such complex brains and hyper-specialization and the amount of intellect in the world when you look at it is ridiculous. So the ideas of arrange marriage working in favour of evolution, and not in favour of the person, while somebody does that is, very interesting...

I think cultures play a major impact in how one approaches dating.

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