>>17683351
Chad Chadson should father children with both the twins, as he is more practically and genetically capable than Autist and therefore his progeny will likely be able to contribute the most to their continued survival. He should also bonk Autist on the head with a rock by surprise to kill him mercifully and ensure all the resources they can harness are used for helping with the growth of healthy and productive children. Chad should not father children with only one of the sisters over the other, as that would be unfair to the sister that is not chosen, harm relationships between the productive island residents, and waste the reproductive potential of the population.