you'll be born today, don't worry you won't be an one-day baby you are in your current age, but without any knowledge, brand new brain even with stronger abilities. Technology is that developed and science is that unified and culture is that known and history is that well shortened, that you can get to learn all of it in some hours, and you have the mental capability to do that.
yes you have to learn how to speak one language, read write, and so on.
one important part is vocabulary, let's say "fear", i think this one would be easy to feel in first day of life, "ownership" hard too explain, lie is easy too learn, but jealousy is not in us , we learn to be jealous by our parents by ownership concept . pride, happiness, success,greed are the other examples . fight can be defined by combination of jealousy and ownership and some other basic things, though it's hard to explain war and killing, it would be a bit easier if it was killing for food, but how can we make them justified.
we created much big big things by our cultures that when i review i see long list of unacceptable illegitimate concepts and actions and actually human-made creatures that i can not handle.
you are right we had good advancement in our medical system. big joke.
