At 5/20/09 05:13 PM, AlyssaShafer wrote:
At 5/20/09 01:02 PM, junkietomato wrote:
Evolution is JUST a theory like gravity is JUST a theory.
The theory of gravity is flawed and will probably be re-written dozens of times before humans die out.
You sort of missed the larger point, there.
The comparison between evolution and gravity is apt because both are examples of fact AND theory.
Plus, it doesn't matter that gravity will be written, because it probably won't be overhauled, just improved. The core conceits of Netwonian gravity and general relativity are the same - that gravitation is due to forces acting between massive objects.
In the same way, refinements to the theory of evolution will preserve its basic ideas - natural selection and mutation. Those ideas aren't going anywhere.
Gravity is a FACT because we can observe it happening. When you jump, you fall again.
The THEORY of gravity is what we use to try and explain the mechanism and make predictions. Currently, the theory that explains the fact of gravity is General Relativity.
Evolution is a FACT because we can observe changes in populations over periods of time. Speciation has been observed in the laboratory.
The THEORY of evolution is what we use to explain the mechanism of evolution. At it's most basic level, it's about mutation and natural selection, but really there's a lot more genetics involved in the modern theory.
At 5/20/09 06:07 PM, Kiryuku wrote:
Well obviously you don't know what your talking about because evolution isn't a fact its a theory, and if you ask me a pretty bad one. There is no evidence that actualy supports evolution. All these scientists that say they found fossil's from millions and billions of years ago are lieing because they still don't have a good way to date them. A lot of fossils have been found that have dinosaur and human foot prints in the same rock layer. How can you explain that if dinosaurs died way before humans ever came?
As explained above, evolution is a fact and a theory. Nobody is asking you because you haven't studied evolutionary biology at a high level. There is mountains of evidence for evolution, and fossils of human and dinosaur footprints in the same place have proven to be hoaxes.
Fossil dating is achieved through radiometric methods, geology, and probably other methods which I can't recall. These entirely separate methods all agree, they don't make conclusions based just on one.