Changes

Flooding is another challenge for Old Earth advocates, as it would wipe out any evolutionary path, particularly among mammals.  The likelihood of a massive flood increases with the period of time, and an older Earth means more disruptive flooding.

Flooding is another challenge for Old Earth advocates, as it would wipe out any evolutionary path, particularly among mammals.  The likelihood of a massive flood increases with the period of time, and an older Earth means more disruptive flooding.

The principle basis for Old Earth is [[radiometric dating]]. But it is a logical tautology to assume that [[radioactive decay]] rates have always been constant, even at higher energy levels.  Such assumption is identical to assuming that the Earth is old, and hence that argument is circular.

The principle basis for Old Earth is [[radiometric dating]], but it is a logical tautology to assume that [[radioactive decay]] rates have always been constant, even at higher energy levels.  Such assumption is identical to assuming that the Earth is old, and hence that argument is circular.

The discipline of [[uniformitarianism]] is also a basis for assuming an old Earth. Extrapolating the rate of geologic processes backwards in time yields an Earth substantially older than the Biblical 6,000 years. Uniformitarianism is also based on assumptions, however; namely, that all geologic processes were acting at the same or similar rates for the whole history of the Earth.

The discipline of [[uniformitarianism]] is also a basis for assuming an old Earth. Extrapolating the rate of geologic processes backwards in time yields an Earth substantially older than the Biblical 6,000 years. Uniformitarianism is also based on assumptions, however; namely, that all geologic processes were acting at the same or similar rates for the whole history of the Earth.