Quote Originally Posted by Yamaneko View Post
Quote Originally Posted by Aerith's Knight View Post
nobody even wonders how the hell they came up with "a million years ago.." when the furthest we can go back in carbon dating is about 20 to 40.000 years.
Carbon dating is not the only kind of absolute dating available to scientists. Potassium-argon dating is used for billion year-old fossils with great accuracy.
all from wikipedia

amount of K40 (0.0117%),

and for accuracy?

As the simulation of the processing of potassium-argon samples showed, the standard deviations for K-Ar dates are so large that resolution higher than about a million years is almost impossible to achieve. By comparison, radiocarbon dates seem almost as precise as a cesium clock! Potassium-argon dating is accurate from 4.3 billion years (the age of the Earth) to about 100,000 years before the present.

At 100,000 years, only 0.0053% of the potassium-40 in a rock would have decayed to argon-40, pushing the limits of present detection devices

0.0053%? you cant even pick that up without white noise

this isnt accurate at all.. its a vage representation where you can say: Somewhere millions of years ago, without actually knowing it.