It's a funny thought for a logical mind.
Great! Then you, using scientific logic, terms, and processes, can provide an alternative explanation for the river?
Rapid, massive erosion over, say.....40 days and nights? :)
The point is, even scientifically, there are other ways that it could have been formed. It shouldn't be stated as FACT that it was formed by erosion from the Colorado River over a gazillion years. Because it's NOT fact.
That is my only point here. TELL THE TRUTH. Don't state theory as fact on every plaque on every display in every museum and National Park in the country.
It's misleading at best, and deceitful at worst, and it shouldn't be defended by anyone........let alone people who are interested in truth........which I perhaps falsely assume that you are.....