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Convergent Evolution Upends Honeyeaters' Taxonomy

grrlscientist writes in with a beautiful piece of science, beautifully explicated. The poignant bit is that the birds in question are all extinct. "Every once in awhile, I will read a scientific paper that astonishes and delights me so much that I can hardly wait to tell you all about it. Such is the situation with a newly published paper about the Hawai'ian Honeyeaters. In short, due to the remarkable power of convergent evolution, Hawai'ian Honeyeaters have thoroughly deceived taxonomists and ornithologists as to their true origin and identity for more than 200 years."

6 of 186 comments (clear)

  1. Re:Predictive power of evolution! by maxume · · Score: 5, Insightful

    Proposed text: "Evolution, like gravity, is just a theory. Please act accordingly."

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  2. Re:Predictive power of evolution! by Chris+Burke · · Score: 4, Insightful

    I think you need to look up what "law" means in a scientific context. The only "Law" of gravity I'm familiar with is Newton's Law of Gravity, which is known to be inaccurate and has been supplanted (at the theoretical if not all practical levels) by Einstein's Theory of Relativity. So tell me how a law is something more than a theory again?

    The scientific community is completely open to other explanations that have actual evidence behind them. Debate about evolution happens all the time, and is ongoing as further evidence is accumulated. Now if you mean that science hasn't embraced whatever non-evolutionary theory you think is being neglected, well that's probably because outside of some blogs there's little to no evidence for it. We've watched evolution* happen in controlled environments. If you've got anything resembling the tiniest fraction of the evidence for evolution, your theory would be considered. If it had as much evidence as evolution, you'd up-end biology (much like evolutionary theory up-ended it).

    Lastly, am I supposed to be shocked or dismayed that a textbook contained an error? Scientific knowledge advances, things previously held to be true are corrected, and freshmen-level textbooks often lag behind. And is your argument really that a false "missing link" means that humans (as opposed to all the other life forms on the planet) didn't undergo evolution? That's not the "proof". It's a step in the family tree. Just because you incorrectly identified your grandmother does not mean you have no family tree.

    * Deliberate trap for the "Well sure microevolution is observed fact, but that doesn't mean anything about macro" response. Feel free not to take the bait.

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  3. Re:Predictive power of evolution! by Shimmer · · Score: 5, Insightful

    "Just" a shift in population ratios? Nice attempt to drive a wedge into the non-existent space between "micro-evolution" and "macro-evolution".
    For the record:
    Shift in population ratios = change in allele frequencies = evolution.

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    The most rabid believers in American Exceptionalism are the exact same people whose policies are destroying it.
  4. Re:Predictive power of evolution! by Chris+Burke · · Score: 5, Insightful

    It only seems to contradict global warming if you have only a superficial understanding of it. "Monotonic increase of temperature" was never a theory of global warming, so because a piece of data contradicts your understanding means nothing.

    Also, the moth thing is more an example of natural selection than the evolution of a new trait. We've observed evolution in labs with flies and plants. Again, just because a layman's example and understanding doesn't seem to completely explain the theory, that doesn't mean that's all the understanding or explanation possible.

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    The enemies of Democracy are
  5. Re:Predictive power of evolution! by Daniel+Dvorkin · · Score: 4, Insightful

    the moth thing in England was brought up, even though I'm pretty certain everyone agrees that no evolution occurred there, it was just a shift in population ratios

    "A shift in population ratios" is evolution by definition. Look it up.

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    The correlation between ignorance of statistics and using "correlation is not causation" as an argument is close to 1.
  6. very curious by interactive_civilian · · Score: 4, Insightful

    AC cowardly says...

    This, of course, is why most things ending in *ology aren't real science.

    I'd be very curious to know how you managed to decide that from an article and a comment about taxONOMY (i.e. the study and method of naming the taxa)...

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