Theories are built on top of facts. I've posted this several times before, but perhaps it has been overlooked or ignored. Here is a video explaining how the terms are used by scientists. The Chicxulub impact is widely accepted among scientists (nothing is ever without dissenters) as the location and cause of the KT extinction. There is an abundance of evidence to support this conclusion. What peer-reviewed evidence would you like to provide demonstrating that dinosaurs and humans coexisted, and that dinosaurs were wiped out by the deluge roughly 4500 years ago?