It is widely taught today that the earth is 4.6 billion years old and that the universe anywhere from 8.0 billion years old to eternally old. The Bible, on the other hand, indicates the universe to be only a few thousand years old, and all known human history (as recorded in the historical annals of Egypt, Sumeria and other ancient nations) also is limited to a few thousand years.
The great ages needed to make evolutionism appear feasible are based mainly on a handful of very slow radioactive decay processes (uranium to lead, potassium to argon, etc.). These must each be based on at least three unprovable assumptions:
- Known initial boundary conditions (assumption of no initial radiogenic lead in the uranium/lead mineral).
- Isolated system (no ingrss or egress of components of the sytem during the times it is functioning).
- Constant rate of process (no effect of environmental radiations or any other force on the decay rate).
None of these assumptions are capable of either proof or disproof since conditions are unknown prior to recorded history. All are known to be wrong in almost all natural processes.
On the other hand, there are scores of worldwide natural processes which, even with the above "uniformitarian" assumptions, will indicate ages far too brief for evolution to be feasible. Some of these are listed in the accompanying tabulation, with references for each.
These may all be wrong, of course, because they are all based on the same unreasonable assumptions as for the very few processes that yield old ages.
However, there are many more of them, and the assumptions are more likely to be valid for short time periods than for long periods. Therefore, the weight of scientific evidence (entirely apart from the definitive and conclusive evidence of Biblical revelation) is that the universe is young.