Was it "in" the world? That seems just a tad inconsistent :-/
the first invention in this world is man by CREATOR
Whoever first picked up a stick and realised it extended their reach.
Chuck Norris. He invented the roundhouse, and used it to kick the Earth into existence.
When the boogeyman goes to sleep, he checks his closet for Chuck Norris.
The caveman when he invented the wheel