I am sure that bitcoin coding was created by an A.I because they dont have the capability similar to a human brain. What I feel about Satoshi Nakamoto is a group of people who coded all the 31,000 lines and created bitcoin. Otherwise, it looks tough for a single human being, but not impossible.
It is possible when the one who created it is a group or a team that is very good in programming, analyzations, mathematics and science being assisted by computer and computer programs. Its not impossible in these era, even calculus and other mathematics subjects is just written by hand and by raw talent by genius mathematicians. For example is MARGARET HAMILTON the girl who wrote the code that took America to the moon.

Margaret Hamilton standing next to the code she wrote which took Apollo 11 to the moon.
Photo and caption is from the googleA.I, the computer big bang. I don't think computer are complex enough in 2008 to be able to create a project like Bitcoin. Satoshi is more likely to be an Alien
They are one in a billion or they are a miracle that only once appear in a century. Nikola tesla is one example of that. True that it's hard for computers to create bitcoin that time that is why satoshi is considered to be a genius. He is like an alien that not just think outside the box but he instead get rid of the box and created something new.