Man was from the beginning, both highly intelligent and skilled

We were created by God.  cod is all powerful and all knowing and he created us in his image.

We did not start out as naked and dumb cave dwellers (or monkeys or amoebas)!

We had our greatest abilities and intelligence the farther we look back in our history we were able to do things in our ancient past that we are not able to achieve now we are not at the pinnacle of our evolution. We have been on a steady decline since the beginning of sin being introduced into our population.  the father stray from God and his laws the dumber we get!

Adam (the first man)'s job was to keep the garden that God planted for him. Adam did not have to go to school to learn how to keep the garden he did not have to train as an apprentice, because how to keep the garden was built into him by God.  It was organic software.

Adam knew his wife he had sexual intercourse with her and she became pregnant and she gave birth to twin boys, Cain and Abel.

Cain was a farmer and Abel became a rancher. Cain did not have to attend Farm School and Abel did not have to attend Ranch School: they intuitively knew what to do because God put the programming in them.

Gen. 4:1-2

[1] And Adam knew Eve his wife; and she conceived, and bare Cain, and said, I have gotten a man from the LORD.
[2] And she again bare his brother Abel. And Abel was a keeper of sheep, but Cain was a tiller of the ground.

Cain moved East of Eden into a land called Nod. He had a son that he named Enoch, and he named the city Enoch after his son. Cain built the city. We also see that God gifted him with skills of urban planning, construction and more. He did not have to learn any of these things. He know them intuitively.  

Again, God programmed this intelligence into him.

As you continue to read you see that the people already knew how to do stuff.  We did not start out living in the wild and living in caves and dragging our women by their hair. We have lost so much knowledge over the years! Sin has corrupted the human race in so many ways!

We are complex biological creatures with true intelligence

We were created with the appearance of age, for example on the very first day of creation, Adam and Eve were fully mature.  We also learn from the early chapters of the book of Genesis that God created man with built-in abilities.  

A human brain is the most complex computer ever!

The human brain is a biological computer.  It has hardware (organic material), and it has been programmed by the Creator.

• Check out https://www.thinkability.us/

Gen. 4:16-22

[16] And Cain went out from the presence of the LORD, and dwelt in the land of Nod, on the east of Eden.
[17] And Cain knew his wife; and she conceived, and bare Enoch: and he builded a city, and called the name of the city, after the name of his son, Enoch.
[18] And unto Enoch was born Irad: and Irad begat Mehujael: and Mehujael begat Methusael: and Methusael begat Lamech.
[19] And Lamech took unto him two wives: the name of the one was Adah, and the name of the other Zillah.
[20] And Adah bare Jabal: he was the father of such as dwell in tents, and of such as have cattle.
[21] And his brother's name was Jubal: he was the father of all such as handle the harp and organ.
[22] And Zillah, she also bare Tubal-cain, an instructer of every artificer in brass and iron: and the sister of Tubal-cain was Naamah.