Go back and read the link you posted. Nowhere in that article does it mention 650,000. That is mentioned in a comment at the end. And, I have no idea how the comment writer came up with that figure either.



Your rant regarding C-14 is so far off base I have no idea where to begin. C-14 does not hold up a sign with any particular date on it, nor is there a measurement based on "how" it affects living critters (whatever that was supposed to mean). 



C-14 dating is based on the decay of the C-14 carbon isotope (an unstable atom). In other words, C-14 (yes, which is all around us and in us) decays at a certain rate (loses its radioactivity - or loses particles if you prefer). And yes, it is "steady state" because radioactive isotopes decay at a specific, measurable rate.



C-14 dating is only accurate for about 50,000 years, and then it no longer of much value. The half-life (the amount of time it takes for C-14 to lose half its radioactivity) is about 5500 years, so after 50,000 years there's not much left to detect.



Linky: http://www.c14dating.com/k12.html



Suggestion: Do some actual research before posting wide-eyed pseudo-science. It's easy to find a website that discounts just about anything. It actually takes some work to learn and discover what lies under the surface. It's called critical thinking.



As far as that nutcase Velikovsky is concerned... wow. Just wow. It amazes me that someone would actually invoke his name to try to support a point.