Let's say that by accident, a mutation caused you to have a larger brain. 1) you will need more food to stay healthy because brains are expensive in terms of e

Let's say that by accident, a mutation caused you to have a larger brain. 1) you will need more food to stay healthy because brains are expensive in terms of energy. 2) you will be pushed to try to get food from as many sources you can but being bad at recognizing viable food will make you sick. 3) traits tied to good health are favored during sexual selection and socialization. 4) if you apply your larger brain to augment your collaborative skills, that helps you in many ways, like better hunting = more food = fewer chances of conflict/in-fighting