RE: Test My Theory: Macro evolution DOES happen?
December 18, 2016 at 10:27 pm
(This post was last modified: December 18, 2016 at 10:27 pm by Tonus.)
I think it's a tough definition to pin down. What is macroevolution? Is it a crocoduck? Is it the appearance of a new species?
The theory of evolution does not allow for sudden, unprecedented changes in a life form. If we were to observe that happening (ie, crocoduck) then the theory would have sprung a very serious leak. As for two-headed animals, that's a mutation that seems to pop up now and then but doesn't seem to confer many benefits.
The theory of evolution does not allow for sudden, unprecedented changes in a life form. If we were to observe that happening (ie, crocoduck) then the theory would have sprung a very serious leak. As for two-headed animals, that's a mutation that seems to pop up now and then but doesn't seem to confer many benefits.
"Well, evolution is a theory. It is also a fact. And facts and theories are different things, not rungs in a hierarchy of increasing certainty. Facts are the world's data. Theories are structures of ideas that explain and interpret facts. Facts don't go away when scientists debate rival theories to explain them. Einstein's theory of gravitation replaced Newton's in this century, but apples didn't suspend themselves in midair, pending the outcome. And humans evolved from ape- like ancestors whether they did so by Darwin's proposed mechanism or by some other yet to be discovered."
-Stephen Jay Gould
-Stephen Jay Gould
