I'm not a creationist so I'll tell you what was really going on 20,000 years ago and it's a lot more fascinating than the nothing creationists would have us believe:
Apparently.....
Some humans were walking around the shores of Willandra Lakes, hunting kangaroo and emu, in central Australia...
The San people of South Africa were just beginning to form their civilization, which survives to this day along with their unique "click" language...
People using coracles were using crab traps for fishing off of Oronsay, Scotland....
The Great Barrier Reef was just starting to be formed...
The Frenchies, always big in art, were busy decorating their caves and left
these images for us to enjoy....
While possibly a little too old by two millenia (carbon dating doesn't get very precise until a little after 20,000 years),
The Venus of Willendorf was made by some industrious Austrians....
Perhaps most spectacularly, way aways off in Peru on the shores of Lake Titicaca, humans were building a pier that used stones of diorite, the hardest form of granite and barely softer than diamond, weighing over 1,000,000 pounds, and transported from a quarry hundreds of miles away and two miles lower in altitude. These stones were precisely and expertly carved into intricate locking patterns as they used no mortar...
Humans have been busy at work for a long time. 20,000 years ago was no different. In fact, it was much harder as the Ice Age was just beginning to end. It would take another 10,000 years for the ice to recede to the relatively stable ice sheets we have today.
20,000 years ago there were far more things out there to kill you too. Megaladon, the enormous cousin of the Great White, was still prowling the coasts, cave lions twice the size of modern lions considered humans to be on the menu in Europe, and in North America (if the most current age studies are correct), natives had to contend with being hunted by
Titanis walleri, the last of the Terror Birds.