That's an argument from incredulity. Just because you have a hard time believing something doesn't mean it isn't true.
I accept that argument.
Can you give any evidence of attempts to scientifically determine when and how creativity in humans began?
It's not a matter of incredulity for me because I accept the Word of God that we are made in HIS image. Our creativity began the moment we were created, because there was no evolution from lower beings. The Bible doesn't give 'wiggle room' on the unique creation of man.