They went back about a million years and used DNA analysis. Eat more meat
No, they think they "went back about a million years" because current dating methods have not been proven to be 100% accurate. Regardless of that, even if they were accurate there is simply too much to assume in making your case. Does protein assist in our development? As far as I know, yes, it definitely does but you're taking that notion and jumping or allowing yourself to be led to a far-fetched, poorly analyzed conclusion.
Here's an example of a misleading way to argue this matter:
Are lions smarter than elephants? No, elephants are smarter, thus vegetarians are also smarter. <- That's every bit a flawed way of coming to a conclusion as what you did. Lions and elephants are different species and of vastly different sizes.
We could attempt to be more objective in posing the same question but using primates- apes to be specific:
Well who's smarter, a bonobo, chimp, gorilla or orangutan (i also spell that one wrong)? What do their diets consist of? Shall we compare species to species or the different groups within a species based on geographic habitat and dietary differences? What do we consider to be smart? Chimps are the most aggressive of the bunch and that includes interspecies predation. Bonobos are more chilled out and Gorillas even mores so, so who's smarter? The species killing eachother or the ones getting along without bloodshed? There is a lot more to consider in making the claims you are than I think you have done.
I agree that predation demands a large degree of team work and planning which causes the brain to develop in ways it MIGHT not otherwise but that is a guess because we can't turn back the clock and run an alternate scenario then check it against what we have today. But I argue it was the act
as well as the protein which may have
led to an increased neural capacity. Do you have any idea how much protein your body actually needs? If you are active and by active I mean you do exercise for more than 1 hr 3xweek then you need about 1 gram per lb of lean muscle tissue. Westerners eat WAAAAAY
too much protein; couple that with increasingly processed foods and you've got an epidemic on your hands. It's sad but the Polish diet is changing towards that direction.
But here's the kicker- our species has passed the stage of development you are referencing to support your conclusion. That phase is over and done with and I've no plans to go back to that level, anatomically, emotionally or mentally. Entirely different endeavors stimulate us mentally now and let me reiterate this for you, WE ALREADY CONSUME TOO MUCH MEAT BASED PROTEIN. Some one lied to you and you bought into the lie because it fit whatever notions you already had or wanted to agree with but it's a lie which you have been positing and you owe it to yourself and others to wise up and stop being duped.