Initially, man was created vegetarian as God gave Adam only plants to eat:
And God said (to Adam), “Behold, I have given you every plant yielding seed which is upon the face of all the earth, and every tree with seed in its fruit; you shall have them for food.
Hundreds of years later, after Noahs flood, God now gave man meat to eat in addition to plants:
And God blessed Noah and his sons, and said to them, …”Every moving thing that lives shall be food for you; and as I gave you the green plants, I give you everything.”
If you take the bible literally, this change in diet would lead to an increase in brain size and function amongst the first humans. This would explain why early humans had smaller brains than later humans …which evolutionists mistake as evidence of monkeys evolving into humans and getting bigger and bigger brains as they evolved.
Whether you take the bible literally or not, what was the purpose of God giving man meat to eat for the first time after Noahs flood?
Giving man meat to eat would lead to an increase in brain size, hence head size …which would make childbirth more dangerous for women (giving birth to babies with larger heads). This seems like a negative though.