Eating dirt seems much more natural than eating animals, I guess they discovered the fire to cook the dirt then, i guess tonight I found the reason why vegans are full of shit :D
Ps just searched for ‘dirt b12’ on ddg and the first website is an ad for b12 supplements
For the b12 needs, eat some algae or even dirt. Yes, dirt. Plenty of dirt on a plant's root, which ancient humans ate like no tomorrow.